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单词 tri-
释义

tri-comb. form

Stress is usually determined by a subsequent element but will be attracted to this combining form for contrast.
Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin tri-, Greek τρι-.
Etymology: Partly < classical Latin tri-, combining form (in e.g. tridens trident n.) of trēs three; and partly < ancient Greek τρι-, combining form (in e.g. τρίπους tripod n.) of τρεῖς three, τρίς thrice; both < the same Indo-European base as Sanskrit tri- (in e.g. tripad three-footed), ablaut variant (zero grade) of the Indo-European base of three adj.Compare French tri- , German tri- . The i , etymologically short in Greek and Latin, was in Latin sometimes lengthened, especially in numerals (trīcēnī , trīgintā , etc.). In English it is now usually long (hence diphthongal, /aɪ/), except in derivatives before two consonants, as triple adj., triptych n., also in trilogy n., trimeter n. In scientific texts tri- is often represented by the numeral, as 3-bracteate, 3-carbon.
1. Forming adjectives (and derived nouns and adverbs) with the senses:
a. Having, characterized by, or consisting of (rarely, belonging or relating to) three (of the things denoted by the second element).
(a) In combination with adjectives derived from nouns (usually Latin or Greek), or less commonly with the noun without adjectival termination.
triacnodal adj.
Brit. /ˌtrʌɪakˈnəʊdl/
,
U.S. /ˌtraɪækˈnoʊd(ə)l/
Geometry having three acnodes or conjugate points (see conjugate adj. 6a).
ΘΚΠ
the world > relative properties > number > geometry > point > [adjective] > specific numbers of
sextactic1859
triacnodal1873
tricrunodal1873
bipunctual1878
uninodal1894
1873 G. Salmon Treat. Higher Plane Curves 245 The quartic is a triacnodal curve composed of a trigonoid figure within the triangle and of the three vertices as acnodes.
triact adj.
Brit. /ˈtrʌɪakt/
,
U.S. /ˈtraɪˌækt/
Zoology having three rays: said of a sponge-spicule. [Shortened < scientific Latin Triactina, genus name (see triactine adj.).]
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having three rays
triact1886
triactine1887
triactinal1891
1886 R. von Lendenfeld in Proc. Zool. Soc. 560 The calcareous triaxon spicules have only three rays—triact.
triactinal adj.
Brit. /(ˌ)trʌɪˈaktᵻnl/
,
/ˌtrʌɪakˈtʌɪnl/
,
U.S. /ˌtraɪˈæktən(ə)l/
,
/ˌtraɪækˈtaɪn(ə)l/
Zoology = triact adj.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having three rays
triact1886
triactine1887
triactinal1891
1891 Cent. Dict. Triactinal.
triactine adj.
Brit. /(ˌ)trʌɪˈaktɪn/
,
/(ˌ)trʌɪˈaktʌɪn/
,
U.S. /ˌtraɪˈækt(ə)n/
,
/ˌtraɪˈækˌtaɪn/
Zoology = triact adj. [ < scientific Latin Triactina, genus name (1857 or earlier) < tri- tri- comb. form + ancient Greek ἀκτῑν- , ἀκτίς ray (see actino- comb. form) + scientific Latin -a -a suffix1.]
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having three rays
triact1886
triactine1887
triactinal1891
1886 Proc. Zool. Soc. 21 Dec. 563 Triactina, with three rays.]
1887 W. J. Sollas in Encycl. Brit. XXII. 416 (Fig. 12) c triod (triaxon triactine).
Categories »
trialate adj.
Brit. /(ˌ)trʌɪˈeɪleɪt/
,
/(ˌ)trʌɪˈeɪlət/
,
U.S. /ˌtraɪˈeɪˌleɪt/
,
/ˌtraɪˈeɪlət/
Natural History three-winged ( Cent. Dict. 1891). [ < tri- comb. form + classical Latin āla wing (see ala n.1) + -ate suffix2.]
triallelic adj.
Brit. /ˌtrʌɪəˈliːlɪk/
,
/ˌtrʌɪəˈlɛlɪk/
,
U.S. /ˌtraɪəˈlilɪk/
,
/ˌtraɪəˈlɛlɪk/
Genetics having three different alleles of a gene.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > allele > condition with respect to
heterozygous1902
homozygous1902
nulliplex1911
simplex1911
hemizygous1921
quadruplex1923
triallelic1944
heterogenic1947
homogenic1947
null1955
1944 S. S. Atwood in Proc. National Acad. Sci. U.S.A. 30 70 Because suitable terms to describe multiple alleles in autotetraploids would facilitate the discussion, the following new terminology is suggested and will be used in this paper:..Triallelic.
1975 Nature 24 July 310/2 Triallelic plants..cannot be obtained by any normal form of inheritance and their appearance is strong evidence for the occurrence of an unusual genetic transfer process.
triannulate adj.
Brit. /(ˌ)trʌɪˈanjᵿlət/
,
/(ˌ)trʌɪˈanjᵿleɪt/
,
U.S. /ˌtraɪˈænjələt/
,
/ˌtraɪˈænjəˌleɪt/
Zoology having or consisting of three rings. [ < tri- comb. form + classical Latin annulus wing (see annulus n.) + -ate suffix2.]
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > composed of rings > having three rings
triannulate1901
1901 Proc. Zool. Soc. 5 Mar. 197 The sixth [segment] is triannulate.
trianthous adj.
Brit. /(ˌ)trʌɪˈanθəs/
,
U.S. /ˌtraɪˈænθəs/
Botany having three flowers. [ < tri- comb. formancient Greek ἄνθος flower (see anthology n.) + -ous suffix.]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > flower or flowering plant > [adjective] > having flowers or blossom > producing many, few, or a specific number
well-flowered1600
proliferous1682
multiflorous1760
uniflorous1760
triflorous1771
biflorous1785
unifloral1849
multifloral1851
oliganthous1857
polyanthous1858
trifloral1860
biflorate1864
trianthous1891
decemflorous-
1891 Cent. Dict. Trianthous.
triarctic adj.
Brit. /(ˌ)trʌɪˈɑːktɪk/
,
/(ˌ)trʌɪˈɑːtɪk/
,
U.S. /ˌtraɪˈɑrktɪk/
,
/ˌtraɪˈɑrdɪk/
(see quot.).
ΘΚΠ
the world > the earth > land > land mass > continent > [adjective] > specific
lemurian1871
triarctic1883
Euramerican1959
Laurasian1962
1883 A. R. Wallace in Nature 22 Mar. 482/2 Heilprin..seeks to show that the Neoarctic and Palæarctic should form one region, for which he proposes..‘Triarctic Region’, or the region of the three northern continents.
triarcuated adj.
Brit. /(ˌ)trʌɪˈɑːkjʊeɪtᵻd/
,
U.S. /ˌtraɪˈɑrkjuˌeɪdᵻd/
three-arched.
ΘΚΠ
the world > space > shape > curvature > types of curvature > [adjective] > like an arch or bow > having three arches
triarcuated1822
1822 J. Parkinson Outl. Oryctol. 264 A series of triarcuated, imbricating, transverse slips.
triareal n.
Brit. /(ˌ)trʌɪˈɛːrɪəl/
,
U.S. /ˌtraɪˈɛriəl/
comprising or divided into three areas.
ΘΚΠ
the world > space > [adjective] > relating to defined portion of space > comprising three areas
triareal1897
1897 T. C. Allbutt et al. Syst. Med. II. 142 Gresswell, under the names ‘triareal’ and ‘pentareal’, has described certain peculiarities of the tongue.
triaxon adj.
Brit. /(ˌ)trʌɪˈaksɒn/
,
U.S. /ˌtraɪˈækˌsɑn/
of sponge-spicules: having three axes; = triaxial adj. [ < tri- comb. form + ancient Greek ἄξων axis (see axon n.).]
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having three axes
triaxial1886
triaxon1886
triaxonian1887
triaxonid1911
1886Triaxon [see triact adj.].
triaxonian adj.
Brit. /ˌtrʌɪakˈsəʊnɪən/
,
U.S. /ˌtraɪækˈsoʊniən/
,
/ˌtraɪækˈsoʊnjən/
= triaxon adj.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having three axes
triaxial1886
triaxon1886
triaxonian1887
triaxonid1911
1887 Amer. Naturalist 21 938 A triaxonian star with five or six rays.
triaxonid adj.
Brit. /(ˌ)trʌɪˈaksənɪd/
,
U.S. /ˌtraɪˈæksənᵻd/
= triaxon adj.
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having three axes
triaxial1886
triaxon1886
triaxonian1887
triaxonid1911
1911 Encycl. Brit. XXV. 729/1 Sponges with a skeleton composed of siliceous spicules,..either triaxonid and hexactinellid in form, or derivable from the triaxonid..type.
tribasilar adj.
Brit. /(ˌ)trʌɪˈbazᵻlə/
,
/(ˌ)trʌɪˈbazl̩ə/
,
/(ˌ)trʌɪˈbasᵻlə/
,
/(ˌ)trʌɪˈbasl̩ə/
,
U.S. /ˌtraɪˈbeɪsələr/
,
/ˌtraɪˈbæzələr/
Anatomy designating a bone formed by union of three bones at the base of the skull. [After scientific Latin tribasilaris (1857 or earlier).]
ΘΚΠ
the world > life > the body > structural parts > bone or bones > skull > parts of skull > [adjective] > back of skull
basioccipital1853
parieto-occipital1855
tribasilar1878
paracondyloid1890
1878 R. T. H. Bartley tr. P. Topinard Anthropol. v. 173 Cretinism, according to [Virchow] is due to the synostosis of the tri-basilar bone—that is to say, of the spheno-basilar suture, and the suture of the body of the anterior sphenoid and the posterior sphenoid.
triblastic adj.
Brit. /(ˌ)trʌɪˈblastɪk/
,
U.S. /ˌtraɪˈblæstɪk/
Zoology having three layers (epiblast, mesoblast, hypoblast) in the blastoderm of the embryo.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [adjective] > blastoderm, etc.
blastodermic1835
blastodermatic1849
mesoblastic1874
mesodermic1875
hypoblastic1877
mesodermal1877
involunto-motory1878
homodermic1883
mesothelial1886
epiblastic1887
triploblastic1888
tetrablastic1891
triblastic1901
1901 Science 6 Dec. 891/2 A possible basis for a division of the ‘triblastic’ animals into two parallel but independent series.
tribracteate adj.
Brit. /(ˌ)trʌɪˈbraktɪət/
,
/(ˌ)trʌɪˈbraktɪˌeɪt/
,
U.S. /ˌtraɪˈbræktiᵻt/
,
/ˌtraɪˈbræktiˌeɪt/
Botany having three bracts.
ΘΚΠ
the world > plants > part of plant > leaf > bract, scale, palea, or spathe > [adjective] > having bracts, etc.
scaly1597
paleaceous1648
squamous1658
paleated1661
paled1704
squamose1731
leprous1759
spathaceous1760
squarrose1760
comose1793
glumose1793
ramentaceous1806
squarrous1806
leprose1818
squamate1826
glumaceous1828
bracteolate1830
lepidote1836
bracteate1839
spathose1839
squamulose1846
bracteated1852
bracted1854
obimbricate1857
squamaceous1857
squarrulose1857
ramentiferous1858
furfuraceous1860
tribracteate1870
tribracteolate1870
paleate1879
bracteose1880
1870 J. D. Hooker Student's Flora Brit. Islands 305 Flowers..in 1- or more-flowered 3-bracteate spikelets.
tribracteolate adj.
Brit. /(ˌ)trʌɪˈbraktɪəleɪt/
,
/(ˌ)trʌɪˈbraktɪələt/
,
/ˌtrʌɪbrakˈtiːəleɪt/
,
/ˌtrʌɪbrakˈtiːələt/
,
U.S. /ˌtraɪbrækˈtiəˌleɪt/
,
/ˌtraɪbrækˈtiələt/
,
/ˌtraɪˈbræktiəˌleɪt/
,
/ˌtraɪˈbræktiələt/
having three bracteoles or minute bracts.
ΘΚΠ
the world > plants > part of plant > leaf > bract, scale, palea, or spathe > [adjective] > having bracts, etc.
scaly1597
paleaceous1648
squamous1658
paleated1661
paled1704
squamose1731
leprous1759
spathaceous1760
squarrose1760
comose1793
glumose1793
ramentaceous1806
squarrous1806
leprose1818
squamate1826
glumaceous1828
bracteolate1830
lepidote1836
bracteate1839
spathose1839
squamulose1846
bracteated1852
bracted1854
obimbricate1857
squamaceous1857
squarrulose1857
ramentiferous1858
furfuraceous1860
tribracteate1870
tribracteolate1870
paleate1879
bracteose1880
1870 J. D. Hooker Student's Flora Brit. Islands 321 Flowers..minutely 3-bracteolate.
tricarinate adj.
Brit. /(ˌ)trʌɪˈkarᵻneɪt/
,
/(ˌ)trʌɪˈkarᵻnət/
,
U.S. /ˌtraɪˈkɛrəˌneɪt/
,
/ˌtraɪˈkɛrənət/
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > ridged > having three ridges
tricarinated1802
tricarinate1897
1897 Proc. Zool. Soc. 2 Feb. 198 Dorsal scales very strongly tricarinate.
tricarinated adj.
Brit. /(ˌ)trʌɪˈkarᵻneɪtᵻd/
,
U.S. /ˌtraɪˈkɛrəˌneɪdᵻd/
Natural History having three keels or ridges.
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > ridged > having three ridges
tricarinated1802
tricarinate1897
1802 G. Shaw Gen. Zool. III. 54 Tricarinated Tortoise.
tricarpellary adj.
Brit. /(ˌ)trʌɪˈkɑːpələri/
,
/ˌtrʌɪkɑːˈpɛləri/
,
U.S. /ˌtraɪˈkɑrpəˌlɛri/
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having style, pistil, or female parts > having specific number or arrangement of carpels
apocarpous1830
carpellary1830
syncarpous1830
polycarpous1836
polycarpic1858
monocarpellary1863
polycarpellary1870
tricarpellary1872
monocarpous1876
tetracamarous1891
tricarpous1891
tricarpellate1900
monocarpellate1960
1872 D. Oliver Lessons Elem. Bot. (new ed.) ii. 253 A tricarpellary pistil.
tricarpellate adj.
Brit. /(ˌ)trʌɪˈkɑːpəleɪt/
,
/(ˌ)trʌɪˈkɑːpələt/
,
U.S. /ˌtraɪˈkɑrpəˌleɪt/
,
/ˌtraɪˈkɑrpələt/
Botany consisting of or having three carpels.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having style, pistil, or female parts > having specific number or arrangement of carpels
apocarpous1830
carpellary1830
syncarpous1830
polycarpous1836
polycarpic1858
monocarpellary1863
polycarpellary1870
tricarpellary1872
monocarpous1876
tetracamarous1891
tricarpous1891
tricarpellate1900
monocarpellate1960
1900 in B. D. Jackson Gloss. Bot. Terms Tricarpellate.
tricarpellite n.
Brit. /(ˌ)trʌɪˈkɑːpəlʌɪt/
,
U.S. /ˌtraɪˈkɑrpəˌlaɪt/
a fossil tricarpellary nut-like fruit, found in the London Clay. [ < scientific Latin Tricarpellites (1840) < tri- tri- comb. form + carpellum carpel n. + -ites -ite suffix1.]
ΘΚΠ
the world > plants > particular plants > plants and herbs > fossil plants > [noun] > parts of
tricarpellite1882
sporangite1889
parichnos1892
1859 D. Page Handbk. Geol. Terms 359 Tricarpellites.., fossil nut-like fruits from the London clay, so called from their consisting of three carpels or seed-cells.]
1882 Ogilvie's Imperial Dict. (new ed.) Tricarpellite.
tricarpous adj.
Brit. /(ˌ)trʌɪˈkɑːpəs/
,
U.S. /ˌtraɪˈkɑrpəs/
Botany ‘bearing three fruits or three carpels’ ( New Sydenham Soc. Lexicon 1899).
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having style, pistil, or female parts > having specific number or arrangement of carpels
apocarpous1830
carpellary1830
syncarpous1830
polycarpous1836
polycarpic1858
monocarpellary1863
polycarpellary1870
tricarpellary1872
monocarpous1876
tetracamarous1891
tricarpous1891
tricarpellate1900
monocarpellate1960
1891 Cent. Dict. Tricarpous.
tricaudal adj.
Brit. /(ˌ)trʌɪˈkɔːdl/
,
U.S. /ˌtraɪˈkɔd(ə)l/
,
/ˌtraɪˈkɑd(ə)l/
[After post-classical Latin tricaudalis (1713 or earlier).]
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > tail-shaped > having tail- or lash-like appendage > having three tails
tricaudal1860
tricaudate1891
1860 R. G. Mayne Expos. Lexicon Med. Sci. Tricaudalis, having three tails; three-tailed: tricaudal.
tricaudate adj.
Brit. /(ˌ)trʌɪˈkɔːdeɪt/
,
U.S. /ˌtraɪˈkɔˌdeɪt/
,
/ˌtraɪˈkɑˌdeɪt/
having three tails or tail-like processes, as the retrahens auris or tricaudālis muscle, or the hind margin of the posterior wings in some Lepidoptera. [After post-classical Latin tricaudatus (1658 or earlier).]
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > tail-shaped > having tail- or lash-like appendage > having three tails
tricaudal1860
tricaudate1891
1891 Cent. Dict. Tricaudate.
tricellular adj.
Brit. /(ˌ)trʌɪˈsɛljᵿlə/
,
U.S. /ˌtraɪˈsɛljələr/
having or consisting of three cells.
ΘΚΠ
the world > life > biology > organism > organisms by number or kind of cells > [adjective]
monocellular1854
multicellular1857
unicellular1858
monoplastic1877
unicelled1877
multicelled1884
acellular1886
monoplastid1889
tricellular1891
single-celled1899
mixed-celled1908
microcellular1909
1891 Cent. Dict. Tricellular.
1900 in B. D. Jackson Gloss. Bot. Terms
tricentral adj.
Brit. /(ˌ)trʌɪˈsɛntr(ə)l/
,
U.S. /ˌtraɪˈsɛntrəl/
having three centres.
ΘΚΠ
the world > space > relative position > central condition or position > [adjective] > having three or many centres
tricentral1642
multicentric1911
1642 H. More Ψυχωδια Platonica sig. I6v The second way that makes the soul tricentrall.
† tricenˈtreity n. Obsolete the fact or attribute of having three centres.
ΘΚΠ
the world > space > relative position > central condition or position > [noun] > fact of having three centres
tricentreity1642
1642 H. More Ψυχωδια Platonica sig. I2v The tricentreity Of humane souls.
tricephalic adj.
Brit. /ˌtrʌɪsᵻˈfalɪk/
,
U.S. /ˌtraɪsəˈfælɪk/
ΘΚΠ
society > authority > rule or government > a or the system of government > government by specific number of rulers > [adjective] > relating to government by three
tricephalic1913
1913 19th Cent. Aug. 284 The dual monarchy is not only bicephalic..but..tricephalic.
tricephalous adj.
Brit. /(ˌ)trʌɪˈsɛf(ə)ləs/
,
/(ˌ)trʌɪˈsɛfl̩əs/
,
U.S. /ˌtraɪˈsɛfələs/
having three heads, three-headed. [Compare post-classical Latin tricephalus (1514 or earlier), ancient Greek τρικέϕαλος.]
ΘΚΠ
the world > space > relative position > high position > [adjective] > of or relating to the top > having (a) top(s) > having specific number
bitop1681
tricephalous1891
1891 Cent. Dict. Tricephalous.
tricolumnar adj.
Brit. /ˌtrʌɪkəˈlʌmnə/
,
/(ˌ)trʌɪˈkɒləmnə/
,
U.S. /ˌtraɪkəˈləmnər/
having three columns; arranged in or occupying three columns of print.
ΘΚΠ
society > communication > printing > printed matter > arrangement or appearance of printed matter > [adjective] > column
columned1821
columnar1833
tricolumnar1865
1865 Pall Mall Gaz. 15 June 9 The tricolumnar ‘Historicus’ favours the Times at his usual length with a letter.
1892 Athenæum 4 June 725/1 Fifty-six pages of index, mostly tricolumnar.
tricontinental adj.
Brit. /ˌtrʌɪkɒntᵻˈnɛntl/
,
U.S. /ˌtraɪˌkɑn(t)əˈnɛn(t)l/
embracing three continents.
ΘΚΠ
the world > the earth > land > land mass > continent > [adjective] > three continents
tricontinental1962
1962 M. Hardwick & M. Hardwick Sherlock Holmes Compan. 199 Watson's astonishing statement about his tri-continental experience of women.
1966 Economist 22 Jan. 299/1 The tricontinental conference held in Havana..will increase the prestige of Dr Castro.
tricornigerous adj.
Brit. /ˌtrʌɪkɔːˈnɪdʒərəs/
,
U.S. /ˌtraɪˌkɔrˈnɪdʒərəs/
three-horned; having three horn-like processes. [ < post-classical Latin tricorniger (4th cent.; < classical Latin cornu horn (see cornu n.) + -ger : see -gerous comb. form) + -ous suffix.]
ΘΚΠ
the world > space > shape > unevenness > projection or prominence > sharp unevenness > [adjective] > having (a) sharp projection(s) > having horn-like projection(s) > specific number
bicorned1605
bicornous1650
tricornigerous1727
bicorn1849
bicornute1880
tricornute1891
1727 N. Bailey Universal Etymol. Eng. Dict. II Tricornigerous.., bearing or having three Horns.
tricornute adj.
Brit. /(ˌ)trʌɪˈkɔːnjuːt/
,
/ˌtrʌɪkɔːˈnjuːt/
,
U.S. /ˌtraɪˈkɔrˌn(j)ut/
ΘΚΠ
the world > space > shape > unevenness > projection or prominence > sharp unevenness > [adjective] > having (a) sharp projection(s) > having horn-like projection(s) > specific number
bicorned1605
bicornous1650
tricornigerous1727
bicorn1849
bicornute1880
tricornute1891
1891 Westwood in Cent. Dict. Tricornute.
Categories »
tricornuted adj.
Brit. /(ˌ)trʌɪˈkɔːnjuːtᵻd/
,
/ˌtrʌɪkɔːˈnjuːtᵻd/
,
U.S. /ˌtraɪˈkɔrˌn(j)udᵻd/
tricoryphean adj.
Brit. /ˌtrʌɪkɒrᵻˈfiːən/
,
U.S. /ˌtraɪkɔrəˈfiən/
having three peaks. [ < Hellenistic Greek τρικόρυφος having three peaks ( < ancient Greek τρι- tri- comb. form + κορυϕή top, summit: see coryphodon n.) + -ean suffix.]
ΘΚΠ
the world > the earth > land > landscape > high land > hill or mountain > [adjective] > pointed
nolleda1398
tricoryphean1816
peaky1821
1816 G. S. Faber Origin Pagan Idolatry II. 502 The Mount of Olives; which he adopted as the local tricoryphèan Meru or Ida of his apostasy.
tricostate adj.
Brit. /(ˌ)trʌɪˈkɒsteɪt/
,
U.S. /ˌtraɪˈkɑˌsteɪt/
three-ribbed. [Compare scientific Latin tricostatus (1787 or earlier).]
ΘΚΠ
the world > plants > part of plant > part defined by form or function > ridge channel > [adjective]
rivelledOE
wrinkled1563
channelled1597
ribbed1597
trisulcated1703
ribby1706
rugose1707
ruminate1800
ruminated1828
striolate?1841
multicostate1849
crested1856
fork-ribbed1858
tricostate1861
bicarinate1872
carinal1872
vallecular1875
carinate1876
bicarinated1880
trisulcate1891
1861 R. Bentley Man. Bot. i. iii. 152 If a ribbed leaf has three ribs..it is said to be three-ribbed or tricostate.
tricotyledonous adj.
Brit. /ˌtrʌɪkɒtlˈiːdn̩əs/
,
U.S. /ˌtraɪkɑdlˈidn̩əs/
Botany having three cotyledons.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [adjective] > of parts > of cotyledon or seed-leaf
tricotyledonous1828
cotyledonar1830
cotyledonous1830
cotyledonal1850
incumbent1851
cotyledonary1854
nursing1861
hypocotyledonary1875
hypocotyledonous1880
syncotyledonous1898
1828 Brande in Lancet 14 June 323/1 Containing three [cotyledons], tricotyled [on] ous.
tricrunodal adj.
Brit. /ˌtrʌɪkrʊˈnəʊdl/
,
U.S. /ˌtraɪkruˈnoʊd(ə)l/
Geometry having three crunodes.
ΘΚΠ
the world > relative properties > number > geometry > point > [adjective] > specific numbers of
sextactic1859
triacnodal1873
tricrunodal1873
bipunctual1878
uninodal1894
1873 G. Salmon Treat. Higher Plane Curves 245 If the ellipse cuts each side in two real points, then the quartic is tricrunodal.
tricrural adj.
Brit. /(ˌ)trʌɪˈkrʊərəl/
,
/(ˌ)trʌɪˈkrʊərl̩/
,
U.S. /ˌtraɪˈkrʊrəl/
three-legged; consisting of three branches radiating from a common centre.
ΘΚΠ
the world > life > biology > physical aspects or shapes > projection or protuberance > [adjective] > branched or having branch-like part
ramulous1664
tricrural1873
1873 F. H. Hooker & J. D. Hooker tr. E. Le Maout & J. Decaisne Gen. Syst. Bot. 915 The macrospores are marked on one hemisphere with a tricrural line.
tridiametral adj.
Brit. /ˌtrʌɪdʌɪˈamᵻtr(ə)l/
,
U.S. /ˌtraɪdaɪˈæmətrəl/
having three diameters.
ΘΚΠ
the world > relative properties > number > geometry > shape or figure > [adjective] > having specific property
hypotenusal?a1560
oblique?a1560
local1673
focal1676
octantal1777
symmetrical1794
radical1848
self-conjugate1855
quadric1856
stellated1859
periphractic1881
homoeoidal1883
tridiametral1891
one-sided1893
semi-infinite1903
simplicial1913
mirror-symmetric1952
1891 Cent. Dict. Tridiametral,..Tridigitate.
tridigital adj.
Brit. /(ˌ)trʌɪˈdɪdʒᵻtl/
,
U.S. /ˌtraɪˈdɪdʒᵻd(ə)l/
ΘΚΠ
the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having three digits
tridigitated1811
tridactyl1812
tridactylous1828
tridigital1881
tridigitate1900
1881 St. G. Mivart Cat 103 The skeleton of the fore-leg..is divisible into a tri- and a bi-digital series, placed side by side.
tridigitate adj.
Brit. /(ˌ)trʌɪˈdɪdʒᵻteɪt/
,
U.S. /ˌtraɪˈdɪdʒᵻˌteɪt/
(a) Zoology having three digits (fingers or toes); (b) Botany digitate with three leaflets, ternate. [Compare scientific Latin tridigitatus (1781 or earlier).]
ΘΚΠ
the world > plants > part of plant > leaf > [adjective] > compound or lobed
cut1565
winged1668
pinnate1687
conjugated1690
trifoliated1698
auriculated1712
auriculate1714
pennate1723
pinnated1725
pennated1727
bigeminate1753
lyrated1753
pedated1753
pinnatifid1753
supradecomposite1753
supradecompound1753
ternated1753
trifoliate1753
lyrate1760
pedate1760
quinate1760
ternate1760
tripinnate1760
palmed1767
bilobated1770
lyre-shaped1778
pennatifid1778
finger-parted1783
superdecompound1783
bipinnate1785
biternate1785
conjugate1785
lobed1787
tergeminate1793
wing-cleft1796
yoked?1803
binate1807
septenate1807
trijugous1813
auricled1821
pinniform1821
multijugous1828
pinnulate1828
trifoliolate1828
bipinnatifid1830
multifoliolate1831
multijugate1831
quinquefoliolate1832
bifoliolate1835
pinnatisected1837
palmatifid1839
tripinnatifid1839
foliate1840
palmatipartite1840
pinnatilobate1840
pinnatipartite1840
pinnatisect1840
bipinnated1842
biconjugate1847
imparipinnate1847
paripinnate1851
pinnatulate1855
polytomous1856
multifoliate1857
pennati-partite1857
pennati-sected1857
ternato-pinnate1857
tripinnatisect1857
patentoternate1859
septemfoliate1859
bipinnatipartite1861
bipinnatisected1861
bipalmate1864
pinnatilobed1866
septenous1866
cut-leaved1870
lobing1870
ternatisect1870
tripinnated1876
trijugate1880
jugate1887
pinnulated1890
trisect1899
tridigitate1900
trigeminous1900
the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having three digits
tridigitated1811
tridactyl1812
tridactylous1828
tridigital1881
tridigitate1900
1900 in B. D. Jackson Gloss. Bot. Terms Tridigitate,..thrice digitate, ternate.
tridigitated adj.
Brit. /(ˌ)trʌɪˈdɪdʒᵻteɪtᵻd/
,
U.S. /ˌtraɪˈdɪdʒᵻˌteɪdᵻd/
ΘΚΠ
the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having three digits
tridigitated1811
tridactyl1812
tridactylous1828
tridigital1881
tridigitate1900
1811 G. Shaw Gen. Zool. VIII. 105 Tridigitated Kingfisher..is a native of New Holland;..the legs and feet red, with three toes only.
Categories »
tridynamous adj.
Brit. /(ˌ)trʌɪˈdɪnəməs/
,
U.S. /ˌtraɪˈdɪnəməs/
Botany having six stamens of which three are longer than the others. [After didynamous adj., tetradynamous adj. at Tetradynamia n. Derivatives.]
tri-elementary adj.
Brit. /ˌtrʌɪɛlᵻˈmɛnt(ə)ri/
,
U.S. /ˌtraɪɛləˈmɛn(t)əri/
,
/ˌtraɪɛləˈmɛntri/
composed of three elements.
ΘΚΠ
the world > matter > chemistry > elements and compounds > [adjective] > of or relating to compounds > by number of contitutive elements > three
ternary1808
tri-elementary1866
1866 W. Odling Lect. Animal Chem. 25 Comparing tri-elementary bodies of this kind with tri-elementary mineral substances.
trifasciated adj.
Brit. /(ˌ)trʌɪˈfaʃɪeɪtᵻd/
,
U.S. /ˌtraɪˈfæʃiˌeɪdᵻd/
Zoology having or marked with three bands. [After post-classical Latin trifasciatus (1695 or earlier) < classical Latin tri- tri- comb. form + post-classical Latin fasciatus fasciate adj.]
ΘΚΠ
the world > animals > animal body > markings or colourings > [adjective] > striped or lined > marked with three lines
trifasciated1777
trilineated1802
trivirgate1863
trilineate1891
1777 T. Pennant Brit. Zool. (ed. 4, quarto) IV. vi. 88 Tellina..Trifasciated..with a very brittle shell.
1802 G. Shaw Gen. Zool. III. 542 Trifasciated Snake.
trifaucian adj.
Brit. /(ˌ)trʌɪˈfɔːʃ(ɪ)ən/
,
U.S. /ˌtraɪˈfɔʃ(i)ən/
,
/ˌtraɪˈfɑʃ(i)ən/
having three throats. [ < classical Latin trifauc-, trifaux (Virgil Aeneid 6. 417; < tri- tri- comb. form + faucēs throat: see fauces n.) + -ian suffix.]
ΘΚΠ
the world > the supernatural > supernatural being > mythical creature or object > [adjective] > of characters from classical mythology > of Cerberus
triceps1577
Cerberean1628
triceptic1716
trifaucian1716
Cerberic1787
trilinguar1824
1716 M. Davies Athenæ Britannicæ II. To Rdr. 41 Those reviving Hydra's and Triceptick or Trifaucian Cerberus's have been often and are still daily baffl'd and defeated.
trifilar adj.
Brit. /(ˌ)trʌɪˈfʌɪlə/
,
U.S. /ˌtraɪˈfaɪlər/
consisting of three threads.
ΘΚΠ
society > occupation and work > materials > derived or manufactured material > other manufactured or derived materials > [adjective] > made of rope or cord > types of
twine1513
twice-laid1592
basten1677
cable-laid1723
hawser-laid1769
water-laid1795
registered1800
shroud-laid1800
whale-laid1812
strap-laid1839
four-strand1867
locked-coil1885
trifilar1903
1903 Nature 5 Feb. 334/1 An inertia table..in which an aluminium ring was supported by a trifilar suspension.
† triˈfistulary adj. Obsolete having three pipes or tubes.
ΘΚΠ
the world > space > shape > curvature > curved three-dimensional shape or body > cylinder > [adjective] > of hollow cylindrical form > consisting of or having tubes > having specific number of
trifistulary1646
multifistular1728
multitubular1849
bifistular1870
single-tube1904
1646 Sir T. Browne Pseudodoxia Epidemica iii. xii. 132 Nor will the solitude of the Phænix allow this denomination, for many there are of that species, and whose trifistulary bill and crany we have beheld our selves. View more context for this quotation
triflagellate adj.
Brit. /(ˌ)trʌɪˈfladʒᵻlət/
,
/(ˌ)trʌɪˈfladʒᵻleɪt/
,
U.S. /ˌtraɪˈflædʒələt/
,
/ˌtraɪˈflædʒəˌleɪt/
Biology having three flagella, as an infusorian.
ΘΚΠ
the world > animals > invertebrates > protozoa > class Infusoria > [adjective] > having form of infusorian > having three flagella
triflagellate1891
trimastigate1891
1891 Cent. Dict. Triflagellate..Trifoveolate.
trifloral adj.
Brit. /(ˌ)trʌɪˈflɔːrəl/
,
/(ˌ)trʌɪˈflɔːrl̩/
,
/(ˌ)trʌɪˈflɒrəl/
,
/(ˌ)trʌɪˈflɒrl̩/
,
U.S. /ˌtraɪˈflɔrəl/
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > flower or flowering plant > [adjective] > having flowers or blossom > producing many, few, or a specific number
well-flowered1600
proliferous1682
multiflorous1760
uniflorous1760
triflorous1771
biflorous1785
unifloral1849
multifloral1851
oliganthous1857
polyanthous1858
trifloral1860
biflorate1864
trianthous1891
decemflorous-
1860 J. E. Worcester Dict. Eng. Lang. Trifloral.
triflorous adj.
Brit. /(ˌ)trʌɪˈflɔːrəs/
,
U.S. /ˌtraɪˈflɔrəs/
Botany bearing three flowers (on one stem); three-flowered.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > flower or flowering plant > [adjective] > having flowers or blossom > producing many, few, or a specific number
well-flowered1600
proliferous1682
multiflorous1760
uniflorous1760
triflorous1771
biflorous1785
unifloral1849
multifloral1851
oliganthous1857
polyanthous1858
trifloral1860
biflorate1864
trianthous1891
decemflorous-
1771 J. R. Forster Flora Amer. Septentrionalis 25 Ranunculus abortivus..triflorous.
trifoveolate adj.
Brit. /(ˌ)trʌɪˈfəʊvɪələt/
,
/(ˌ)trʌɪˈfəʊvɪəleɪt/
,
U.S. /ˌtraɪˈfoʊviələt/
,
/ˌtraɪˈfoʊviəˌleɪt/
= trifoveolated adj. [After scientific Latin trifoveolatus (1831 or earlier).]
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [adjective] > of general parts > having three foveolae
trifoveolate1891
1891 Cent. Dict. Triflagellate..Trifoveolate.
trifoveolated adj.
Brit. /(ˌ)trʌɪˈfəʊvɪəleɪtᵻd/
,
U.S. /ˌtraɪˈfoʊviəˌleɪdᵻd/
Entomology having three foveolæ or shallow pits.
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > having depressions or pits > having three pits
trifoveolated1861
1861 H. Hagen Synopsis Neuroptera N. Amer. 193 Each side with a fuscous, trifoveolated stripe.
trifunctional adj.
Brit. /(ˌ)trʌɪˈfʌŋ(k)ʃn̩(ə)l/
,
/(ˌ)trʌɪˈfʌŋ(k)ʃən(ə)l/
,
U.S. /ˌtraɪˈfəŋ(k)ʃ(ə)nəl/
Chemistry having three functional groups in the molecule.
ΘΚΠ
the world > matter > chemistry > chemical structure or stereochemistry > [adjective] > of or relating to functional groups in a molecule
trifunctional1929
monofunctional1946
1929 W. H. Carothers in Jrnl. Amer. Chem. Soc. LI. 2550 Among compounds having more than one functional group, those of the type x—R—y may be called bifunctional, R″x3, trifunctional, etc.
1975 Nature 10 Apr. 482/2 An essential feature is that some of these amino acids are trifunctional.
trifunctionally adv.
Brit. /(ˌ)trʌɪˈfʌŋ(k)ʃn̩əli/
,
/(ˌ)trʌɪˈfʌŋ(k)ʃn̩l̩i/
,
/(ˌ)trʌɪˈfʌŋ(k)ʃənl̩i/
,
/(ˌ)trʌɪˈfʌŋ(k)ʃ(ə)nəli/
,
U.S. /ˌtraɪˈfəŋ(k)ʃ(ə)nəli/
ΘΚΠ
the world > matter > chemistry > chemical structure or stereochemistry > [adverb] > characterized by functional groups
trifunctionally1941
anchimerically1953
1941 Jrnl. Amer. Chem. Soc. 63 3085/2 (caption) Schematic representation of a trifunctionally branched three-dimensional polymer molecule.
trigastric adj.
Brit. /(ˌ)trʌɪˈɡastrɪk/
,
U.S. /ˌtraɪˈɡæstrɪk/
Anatomy having three bellies, as a muscle. [After digastric adj.]
ΘΚΠ
the world > life > the body > structural parts > muscle > types of muscles > [adjective]
orbicular1615
biceps1634
bicipital1646
trigastric1676
adducent1694
biventral1706
attollent1713
penniform1713
antagonistic1725
monogastric1749
adductory1752
sublime1800
pennated1836–9
intrinsic1839
pennate1877
sphincteric1883
sphinctrate1887
sphincterial1889
agonistic1905
sphinctered1963
1676 Philos. Trans. (Royal Soc.) 11 770 He makes an ingenious supposition of a trigastrick muscle.
trigeneric adj.
Brit. /ˌtrʌɪdʒᵻˈnɛrɪk/
,
U.S. /ˌtraɪdʒəˈnɛrɪk/
Grammar of three genders.
ΘΚΠ
the mind > language > linguistics > study of grammar > gender > [adjective] > of three genders
trigeneric1879
1879 J. Earle Philol. Eng. Tongue (ed. 3) vii. 391 The old adjective had..even a double set of trigeneric inflections.
Categories »
triglandular adj.
Brit. /(ˌ)trʌɪˈɡlandjᵿlə/
,
/(ˌ)trʌɪˈɡlandʒᵿlə/
,
U.S. /ˌtraɪˈɡlændʒələr/
,
/ˌtraɪˈɡlændjələr/
Botany ‘having three nuts or nutlets in one involucre’ ( Cent. Dict. 1891). [ < tri- comb. form + scientific Latin glandula (see glandule n.) + -ar suffix1.]
triguttulate adj.
Brit. /(ˌ)trʌɪˈɡʌtjᵿlət/
,
/(ˌ)trʌɪˈɡʌtjᵿleɪt/
,
/(ˌ)trʌɪˈɡʌtʃᵿlət/
,
/(ˌ)trʌɪˈɡʌtʃᵿleɪt/
,
U.S. /ˌtraɪˈɡətʃələt/
,
/ˌtraɪˈɡətʃəˌleɪt/
Natural History having three spots like small drops.
ΘΚΠ
the world > life > biology > physical aspects or shapes > marks > [adjective] > marked with points or dots
guttated1727
maculose1727
punctated1752
punctate1760
puncticulate1800
punctuated1821
guttate1826
punctiform1839
tripunctate1872
guttiform1874
triguttulate1887
1887 W. Phillips Man. Brit. Discomycetes 27 Sporidia 8, narrowly fusiform, bi- or tri-guttulate.
trihemeral adj.
Brit. /(ˌ)trʌɪˈhɛmərəl/
,
/(ˌ)trʌɪˈhɛmərl̩/
,
U.S. /ˌtraɪˈhɛmərəl/
lasting three days. [ < ancient Greek τριήμερος ( < τρι- tri- comb. form + ἡμέρα day: see hemera n.2) + -al suffix1.]
ΘΚΠ
the world > time > period > a day or twenty-four hours > [adjective] > of or lasting specific number of days
novendial1533
triduan1597
quadragesimal1610
hebdomadal1612
quinquagesimal1652
tricenary1655
septuary1700
tridiurnal1828
trigesimal1839
trihemeral1840
ninety-day1859
three-day1890
1840 G. S. Faber Primitive Doctr. Regeneration ii. vi. 140 You were thrice plunged into the Water,..symbolically exhibiting the trihemeral continuance of Christ in the sepulchre.
trihilate adj.
Brit. /(ˌ)trʌɪˈhʌɪleɪt/
,
/(ˌ)trʌɪˈhʌɪlət/
,
U.S. /ˌtraɪˈhaɪˌleɪt/
,
/ˌtraɪˈhaɪlət/
Botany see quot. [ < scientific Latin trihilata (1751 or earlier) < tri- tri- comb. form + hilum hilum n. + -ata -ate suffix2.]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [adjective] > of parts > of or relating to hilum and related parts
strophiolate1821
carunculate1835
hilar1864
trihilate1866
caruncled1870
1866 J. Lindley & T. Moore Treasury Bot. Trihilate, having three apertures, as some sorts of pollen grains.
trihypostatic adj.
Brit. /ˌtrʌɪhʌɪpə(ʊ)ˈstatɪk/
,
/ˌtrʌɪhɪpə(ʊ)ˈstatɪk/
,
U.S. /ˌtraɪhaɪpəˈstædɪk/
existing in three ‘hypostases’ or ‘persons’: see hypostasis n. 5 (b).
ΘΚΠ
the world > the supernatural > deity > Christian God > the Trinity > [adjective] > constituting a Trinity
thrilec725
trinune1620
triune1635
tri-personal1641
triunala1711
three-one1719
trihypostatic1862
1862 J. M. Neale Hymns Eastern Church 32 Three co-eternal, co-enthroned,..Tri~hypostatic Essence.
trijugate adj.
Brit. /ˈtrʌɪdʒᵿɡeɪt/
,
/ˈtrʌɪdʒᵿɡət/
,
U.S. /ˈtraɪdʒəˌɡeɪt/
,
/ˈtraɪdʒuɡət/
Botany = trijugous adj.
ΘΚΠ
the world > plants > part of plant > leaf > [adjective] > compound or lobed
cut1565
winged1668
pinnate1687
conjugated1690
trifoliated1698
auriculated1712
auriculate1714
pennate1723
pinnated1725
pennated1727
bigeminate1753
lyrated1753
pedated1753
pinnatifid1753
supradecomposite1753
supradecompound1753
ternated1753
trifoliate1753
lyrate1760
pedate1760
quinate1760
ternate1760
tripinnate1760
palmed1767
bilobated1770
lyre-shaped1778
pennatifid1778
finger-parted1783
superdecompound1783
bipinnate1785
biternate1785
conjugate1785
lobed1787
tergeminate1793
wing-cleft1796
yoked?1803
binate1807
septenate1807
trijugous1813
auricled1821
pinniform1821
multijugous1828
pinnulate1828
trifoliolate1828
bipinnatifid1830
multifoliolate1831
multijugate1831
quinquefoliolate1832
bifoliolate1835
pinnatisected1837
palmatifid1839
tripinnatifid1839
foliate1840
palmatipartite1840
pinnatilobate1840
pinnatipartite1840
pinnatisect1840
bipinnated1842
biconjugate1847
imparipinnate1847
paripinnate1851
pinnatulate1855
polytomous1856
multifoliate1857
pennati-partite1857
pennati-sected1857
ternato-pinnate1857
tripinnatisect1857
patentoternate1859
septemfoliate1859
bipinnatipartite1861
bipinnatisected1861
bipalmate1864
pinnatilobed1866
septenous1866
cut-leaved1870
lobing1870
ternatisect1870
tripinnated1876
trijugate1880
jugate1887
pinnulated1890
trisect1899
tridigitate1900
trigeminous1900
1880 A. Gray Struct. Bot. 417/2 Pinnate leaves are unijugate, with a single pair of leaflets, bijugate, with two pairs, trijugate, with three pairs [etc.].
trijugous adj.
Brit. /ˈtrʌɪdʒᵿɡəs/
,
U.S. /ˈtraɪdʒuɡəs/
Botany having three pairs of leaflets: said of a pinnate leaf. [ < tri- comb. form + classical Latin iugum yoke (see jugum n.) + -ous suffix; compare classical Latin triiugus triple (2nd cent. a.d. in Apuleius).]
ΘΚΠ
the world > plants > part of plant > leaf > [adjective] > compound or lobed
cut1565
winged1668
pinnate1687
conjugated1690
trifoliated1698
auriculated1712
auriculate1714
pennate1723
pinnated1725
pennated1727
bigeminate1753
lyrated1753
pedated1753
pinnatifid1753
supradecomposite1753
supradecompound1753
ternated1753
trifoliate1753
lyrate1760
pedate1760
quinate1760
ternate1760
tripinnate1760
palmed1767
bilobated1770
lyre-shaped1778
pennatifid1778
finger-parted1783
superdecompound1783
bipinnate1785
biternate1785
conjugate1785
lobed1787
tergeminate1793
wing-cleft1796
yoked?1803
binate1807
septenate1807
trijugous1813
auricled1821
pinniform1821
multijugous1828
pinnulate1828
trifoliolate1828
bipinnatifid1830
multifoliolate1831
multijugate1831
quinquefoliolate1832
bifoliolate1835
pinnatisected1837
palmatifid1839
tripinnatifid1839
foliate1840
palmatipartite1840
pinnatilobate1840
pinnatipartite1840
pinnatisect1840
bipinnated1842
biconjugate1847
imparipinnate1847
paripinnate1851
pinnatulate1855
polytomous1856
multifoliate1857
pennati-partite1857
pennati-sected1857
ternato-pinnate1857
tripinnatisect1857
patentoternate1859
septemfoliate1859
bipinnatipartite1861
bipinnatisected1861
bipalmate1864
pinnatilobed1866
septenous1866
cut-leaved1870
lobing1870
ternatisect1870
tripinnated1876
trijugate1880
jugate1887
pinnulated1890
trisect1899
tridigitate1900
trigeminous1900
1813 J. M. Good et al. Pantologia Trijugous Leaf,..a pinnate leaf with three pairs of leaflets.
trilabiate adj.
Brit. /(ˌ)trʌɪˈleɪbɪeɪt/
,
/(ˌ)trʌɪˈleɪbɪət/
,
U.S. /ˌtraɪˈleɪbiᵻt/
,
/ˌtraɪˈleɪbiˌeɪt/
Natural History three-lipped. [After scientific Latin trilabiatus (1775 or earlier).]
ΘΚΠ
the world > animals > animal body > general parts > head and neck > [adjective] > of the lip > having three lips
trilabiate1856
1856–8 W. Clark tr. J. van der Hoeven Handbk. Zool. I. 192 Body anteriorly obtuse,..Mouth trilabiate.
trilamellar adj.
Brit. /ˌtrʌɪləˈmɛlə/
,
U.S. /ˌtraɪləˈmɛlər/
[After French trilamellaire (1829 or earlier).]
ΘΚΠ
the world > plants > part of plant > (defined by) distribution, arrangement, or position > [adjective] > having or consisting of specific number of layers or rows
uniserial1828
uniseriate1831
bifarious1846
trifarious1846
pentastichous1850
tristichous1857
multiseriate1859
tetrastichous1866
trilamellar1900
1900 B. D. Jackson Gloss. Bot. Terms Trilamellar.
trilamellated adj.
Brit. /(ˌ)trʌɪˈlamᵻleɪtᵻd/
,
U.S. /ˌtraɪˈlæməˌleɪdᵻd/
[Compare scientific Latin trilamellatus (1806 or earlier).]
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > consisting of single layer > having three layers
trilamellated1822
trilaminate1882
1822 J. Parkinson Outl. Oryctol. 186 One [tooth of the shell]..slightly trilamellated.
trilaminar adj.
Brit. /(ˌ)trʌɪˈlamᵻnə/
,
U.S. /ˌtraɪˈlæmənər/
ΘΚΠ
the world > life > biology > substance > cell > [adjective] > arrangement of
palisaded1874
toruliform1876
trilaminar1889
cytoarchitectonic1905
cytoarchitectural1912
1889 Cent. Dict. Trilaminar.
1971 New Scientist 1 Apr. 24/1 (caption) Electron micrographs of mitochondrial membranes reveal a trilaminar or railway track appearance.
1977 Jrnl. Protozool. 24 18/1 The trilaminar construction of the ciliate cortex.
trilaminate adj.
Brit. /(ˌ)trʌɪˈlamᵻnət/
,
/(ˌ)trʌɪˈlamᵻneɪt/
,
U.S. /ˌtraɪˈlæmənət/
,
/ˌtraɪˈlæməˌneɪt/
Natural History and Cytology having or consisting of three layers. [Compare scientific Latin trilaminatus (1802 or earlier).]
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > consisting of single layer > having three layers
trilamellated1822
trilaminate1882
1882 Sladen in Jrnl. Linn. Soc. 16 243 The spinelets are..regularly trilaminate.
Categories »
trilophodont adj.
Brit. /(ˌ)trʌɪˈləʊfə(ʊ)dɒnt/
,
U.S. /ˌtraɪˈlɑfəˌdɑnt/
,
/ˌtraɪˈloʊfəˌdɑnt/
Zoology having molar teeth with three transverse ridges, as the genus Trilophodon of mastodons. [ < tri- comb. form + ancient Greek λόϕος ridge (see lopho- comb. form) + -odont comb. form, after scientific Latin Trilophodon (1857 or earlier).]
trilophous adj.
Brit. /ˈtrɪləfəs/
,
U.S. /ˈtrɪləfəs/
having three rays forked, as a sponge-spicule. [ < tri- comb. form + ancient Greek λόϕος crest (see lopho- comb. form) +-ous suffix.]
ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [adjective] > relating to a sponge > of parts of sponge > having three rays > forked
trilophous1909
1909 Cent. Dict. Suppl. Trilophous.
Categories »
triluminar adj.
Brit. /(ˌ)trʌɪˈl(j)uːmᵻnə/
,
U.S. /ˌtraɪˈlumənər/
‘having three lights’ (Bailey, 1727). [Compare post-classical Latin triluminaris (1614 or earlier).]
Categories »
triluminous adj.
Brit. /(ˌ)trʌɪˈl(j)uːmᵻnəs/
,
U.S. /ˌtraɪˈlumənəs/
= triluminar adj.
trimastigate adj.
Brit. /(ˌ)trʌɪˈmastᵻɡət/
,
/(ˌ)trʌɪˈmastᵻɡeɪt/
,
U.S. /ˌtraɪˈmæstəɡət/
,
/ˌtraɪˈmæstəˌɡeɪt/
Biology = triflagellate adj. [ < tri- comb. form + ancient Greek μαστιγ-, μάστιξ whip (see -mastix comb. form) + -ate suffix2.]
ΘΚΠ
the world > animals > invertebrates > protozoa > class Infusoria > [adjective] > having form of infusorian > having three flagella
triflagellate1891
trimastigate1891
1891 Cent. Dict. Trimastigate.
Categories »
trimembral adj.
Brit. /(ˌ)trʌɪˈmɛmbr(ə)l/
,
U.S. /ˌtraɪˈmɛmbrəl/
‘having, or consisting of, three members’ (Webster, 1864).
trimuscular adj.
Brit. /(ˌ)trʌɪˈmʌskjᵿlə/
,
U.S. /ˌtraɪˈməskjələr/
furnished with three muscles.
ΘΚΠ
the world > animals > animal body > general parts > constituent materials > [adjective] > having three muscles
trimuscular1875
1875 C. C. Blake Zoology 108 The larynx is trimuscular.
trinoctial adj.
Brit. /(ˌ)trʌɪˈnɒkʃl/
,
U.S. /ˌtraɪˈnɑkʃ(ə)l/
belonging to or lasting three nights. [ < classical Latin trinoctiālis < trinoctium period of three nights ( < tri- tri- comb. form + noct- nox night (see night n.) + -ium : see -y suffix4) + -ālis -al suffix1.]
ΘΚΠ
the world > time > day and night > night > [adjective] > lasting specific number of nights
trinoctial1623
1623 H. Cockeram Eng. Dict. Trinoctial, belonging to three nights.
1880 J. Muirhead Inst. of Gaius & Rules of Ulpian Digest 623 Manus,..avoidance of it by trinoctial interruption.
trinucleate adj.
Brit. /(ˌ)trʌɪˈnjuːklɪət/
,
/(ˌ)trʌɪˈnjuːklɪeɪt/
,
U.S. /ˌtraɪˈn(j)ukliət/
,
/ˌtraɪˈn(j)ukliˌeɪt/
Biology having three nuclei. [Compare scientific Latin trinucleatus (1845 or earlier).]
ΘΚΠ
the world > life > biology > substance > cell > cell organelle or contents > [adjective] > having nucleus > having one or many nuclei
polynucleated1857
multinuclear1860
quadrinucleate1863
multinucleated1873
polynuclear1876
multinucleate1877
multinucleolar1882
uninuclear1882
uninucleate1885
trinucleate1887
mononucleated1890
polynucleate1894
polymorphonuclear1897
uninucleated1898
mononucleate1901
polymorphonucleate1904
polymorph1906
heterokaryotic1916
1887 W. Phillips Man. Brit. Discomycetes 254 Sporidia..3-nucleate or pseudo-septate.
trinucleotide n.
Brit. /(ˌ)trʌɪˈnjuːklɪətʌɪd/
,
U.S. /ˌtraɪˈn(j)ukliəˌtaɪd/
Biochemistry an oligonucleotide in which the number of nucleotides is three.
ΚΠ
1918 Jrnl. Chem. Soc. 114 i. 48 The simultaneous liberation of the trinucleotide, triphosphonucleic acid, and the mononucleotide, uridine-phosphoric acid, indicates that the three constituent mononucleotides in triphosphonucleic acid must be combined in a different manner from the uridine-phosphoric acid in the parent molecule of yeast~nucleic acid.
1974 Nature 25 Oct. 734/2 The two RNAs are known to contain an identical trinucleotide at their 5′ terminal.
triocular adj.
Brit. /(ˌ)trʌɪˈɒkjᵿlə/
,
U.S. /ˌtraɪˈɑkjələr/
having three eyes.
ΘΚΠ
the world > life > the body > external parts of body > head > face > eye > [adjective] > having > specific number
one-eyedOE
monoculusc1450
Polyphemian1602
monoculate1618
monocular1640
unocular1653
monoculous1656
Polyphemous1695
monoptical1821
Polyphemic1837
triocular1844
monophthalmic1857
monops1857
two-eyed1864
thousand-eyed1871
1844 M. F. Tupper Heart iv Men..being neither naturally monocular nor triocular.
trioperculate adj.
Brit. /ˌtrʌɪə(ʊ)ˈpəːkjᵿlət/
,
U.S. /ˌtraɪoʊˈpərkjələt/
,
/ˌtraɪoʊˈpərkjəˌleɪt/
Natural History having three opercula (see operculum n.). [After scientific Latin trioperculatus (1823 or earlier).]
ΘΚΠ
the world > plants > particular plants > moss > [adjective] > of or relating to types of
sphagnous1828
splachnoid1833
acrocarpous1842
hypnoid1852
lycopodiaceous1852
astomous1857
pleurocarpous1858
gymnostomous1861
sphagneous1861
syncladous1863
systylous1863
stegocarpous1884
systylious1887
trioperculate1900
megasporangiate1901
1900 in B. D. Jackson Gloss. Bot. Terms Tri~operculate.
Categories »
triorthogonal adj.
Brit. /ˌtrʌɪɔːˈθɒɡənl/
,
U.S. /ˌtraɪɔrˈθɑɡən(ə)l/
Geometry pertaining to or consisting of three systems of lines or surfaces, each intersecting the other two at right angles.
triovulate adj.
Brit. /(ˌ)trʌɪˈəʊvjᵿlət/
,
/(ˌ)trʌɪˈɒvjᵿlət/
,
/(ˌ)trʌɪˈəʊvjᵿleɪt/
,
/(ˌ)trʌɪˈɒvjᵿleɪt/
,
U.S. /ˌtraɪˈɑvjələt/
,
/ˌtraɪˈoʊvjələt/
,
/ˌtraɪˈɑvjəˌleɪt/
,
/ˌtraɪˈoʊvjəˌleɪt/
Botany having three ovules. [After scientific Latin triovulatus (1821 or earlier).]
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [adjective] > ovum > types of ovum
orthotropal1832
meroblastic1864
periblastic1876
holoblastic1879
orthotropous1880
telolecithal1880
progamous1885
teleplasmic1886
triovulate1891
1891 Cent. Dict. Triovulate.
tripaleolate adj.
Brit. /(ˌ)trʌɪˈpeɪlɪələt/
,
/(ˌ)trʌɪˈpeɪlɪəleɪt/
,
U.S. /ˌtraɪˈpeɪliələt/
,
/ˌtraɪˈpeɪliəˌleɪt/
Botany see quot. [After scientific Latin triopaleolatus (1815 or earlier).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having calyx > of, having, or positioned near sepals
two-sepalled1821
polysepalous1829
tetrasepalous1829
monosepalous1830
sepaloid1830
trisepalous1830
valvate1830
synsepalous1847
sepaline1857
tripaleolate1866
antisepalous1878
1866 J. Lindley & T. Moore Treasury Bot. II. 1172 Tripaleolate, consisting of three pales or paleæ, as the flower of a bamboo.
tripapillated adj.
Brit. /(ˌ)trʌɪˈpapᵻleɪtᵻd/
,
U.S. /ˌtraɪˈpæpəˌleɪdᵻd/
Zoology having three papillæ.
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > having a protuberance > having three nipple-like protuberances
tripapillated1891
1891 Allen in Cent. Dict. Tripapillated.
triparental adj.
Brit. /ˌtrʌɪpəˈrɛntl/
,
U.S. /ˌtraɪpəˈrɛn(t)l/
Microbiology involving or resulting from the infection of a bacterium by three different bacteriophages at the same time.
ΘΚΠ
the world > life > biology > organism > micro-organism > virus > phage > [adjective] > infection by three
triparental1951
1951 Cold Spring Harbor Symp. Quantitative Biol. XVI. 471/2 Important information about genetic recombination comes from experiments in which the frequency of triparental recombination is measured.
1961 Genetics 46 1314 Occurrence of triparental recombinants between two Hfr and one F− has been demonstrated in E. coliK−12.
1976 Ann. Rev. Microbiol. 30 517 Nonconjugative plasmid transfer by such triparental matings may occur under ideal laboratory conditions.
tripaschal adj.
Brit. /(ˌ)trʌɪˈpask(ə)l/
,
U.S. /ˌtraɪˈpæsk(ə)l/
,
/ˌtraɪˈpæʃ(ə)l/
including three passovers.
ΘΚΠ
society > faith > worship > liturgical year > feast, festival > Jewish seasons and feasts > Passover > [adjective] > including three
tripaschal1883
1883 P. Schaff Hist. Christian Church (ed. 2) I. §16. 130 Three theories [of the length of Christ's public ministry],..designated as bipaschal, tripaschal, and quadripaschal schemes, according to the number of Passovers.
triphasic adj.
Brit. /(ˌ)trʌɪˈfeɪzɪk/
,
U.S. /ˌtraɪˈfeɪzɪk/
having or exhibiting three phases.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > electricity > electricity in living organisms > [adjective] > of currents
diphasic1881
triphasic1901
1901 A. H. Buck Ref. Handbk. Med. Sci. (rev. ed.) III. 105 In the frog's heart the variation shown by the capillary electrometer is diphasic. For the human heart the later work seems to show a triphasic current.
triphyletic adj.
Brit. /ˌtrʌɪfʌɪˈlɛtɪk/
,
U.S. /ˌtraɪfaɪˈlɛdɪk/
see quot. [Compare German triphyletisch (1875 or earlier).]
ΘΚΠ
the world > plants > variety or species > [adjective] > hybrid
bigeneric1817
tetraphyletic1900
triphyletic1900
1900 in B. D. Jackson Gloss. Bot. Terms Triphyletic,..used of hybrids containing the blended strains of three species.
tripolar adj.
Brit. /(ˌ)trʌɪˈpəʊlə/
,
U.S. /ˌtraɪˈpoʊlər/
having or characterized by three poles.
ΘΚΠ
the world > life > biology > physical aspects or shapes > specific areas or structures > [adjective] > of or having an end or pole
bipolar1810
tripolar1865
1865 C. B. Mansfield Theory of Salts 33 The general idea of a tripolar compound, the simplest form of which is supposed to be water.
1894 W. Bateson Materials Study Variation xvi. 430 Tripolar division of nucleus in embryonic tissue of Trout.
triprosthomerous adj.
Brit. /ˌtrʌɪprɒsˈθɒmərəs/
,
U.S. /ˌtraɪprɑsˈθɑmərəs/
Comparative Anatomy consisting of three prosthomeres, i.e. somites which, with their parapodia, have passed forwards from the thorax. [ < tri- comb. form + prosthomere ( < ancient Greek πρόσθεν forwards (see prosthaphaeresis n.) + μέρος part: see mero- comb. form1) + -ous suffix.]
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > [adjective] > of parts of > consisting of three prosthomeres
triprosthomerous1902
1902 E. R. Lankester in Encycl. Brit. XXV. 700 Arthropoda—Hexapoda. Head shown by its early development to be triprosthomerous.
triprostyle adj.
Brit. /(ˌ)trʌɪˈprəʊstʌɪl/
,
/(ˌ)trʌɪˈprɒstʌɪl/
,
U.S. /ˌtraɪˈproʊˌstaɪl/
of an ancient temple: having a portico with three pillars in front (also said of the portico).
ΘΚΠ
society > leisure > the arts > visual arts > architecture > column > [adjective] > having specific number of columns
decastyle1727
polystyle1736
hexastyle1748
octastyle1832
tetrastyle1837
triprostyle1841
heptastyle1843
polystylar1843
monostylar1844
monostyle1850
monostyle1850
enneastyle1875
pentastyle1882
tetraprostyle1891
tetrastylic1895
hexastylar-
1841 Civil Engineer & Architect's Jrnl. 4 118/2 Only the portico part of the temple (a Corinthian hexastyle, triprostyle) advanced into the enclosed area in front.
1841 Penny Cycl. XX. 74/2.
tripunctal adj.
Brit. /(ˌ)trʌɪˈpʌŋ(k)tl/
,
U.S. /ˌtraɪˈpəŋ(k)t(ə)l/
occupying three points in space. [ < post-classical Latin tripunctalis (from 13th cent. in British sources) < classical Latin tri- tri- comb. form + punctum point (see point n.1) + -ālis -al suffix1; compare punctal adj.]
ΘΚΠ
the world > space > [adjective] > having property of occupying space > occupying three points
tripunctal1897
1897 M. H. Dziewicki Wyclif's De Logica III. Introd. 23 If the Equator consist of tripunctal atoms, it cannot be a circle.
tripunctate adj.
Brit. /(ˌ)trʌɪˈpʌŋ(k)teɪt/
,
U.S. /ˌtraɪˈpəŋ(k)ˌteɪt/
marked with three points or dots. [Compare scientific Latin tripunctatus (1763 or earlier).]
ΘΚΠ
the world > life > biology > physical aspects or shapes > marks > [adjective] > marked with points or dots
guttated1727
maculose1727
punctated1752
punctate1760
puncticulate1800
punctuated1821
guttate1826
punctiform1839
tripunctate1872
guttiform1874
triguttulate1887
1872 H. A. Nicholson Man. Palæontol. 491 Oval or elliptical tripunctate areoles.
tripupillate adj.
Brit. /(ˌ)trʌɪˈpjuːpᵻlət/
,
/(ˌ)trʌɪˈpjuːpᵻleɪt/
,
U.S. /ˌtraɪˈpjupələt/
,
/ˌtraɪˈpjupəˌleɪt/
Entomology having three ‘pupils’ or included spots, as an ocellated spot on an insect's wing. [Compare scientific Latin tripupillatus (1776 or earlier).]
ΘΚΠ
the world > animals > animal body > markings or colourings > [adjective] > dappled or spotted > having three spots > having three included spots
tripupillate1826
1826 W. Kirby & W. Spence Introd. Entomol. IV. xlvi. 287 An ocellus is called bipupillate, tripupillate, etc., when there are two, three, etc. of these spots.
Categories »
tripyramidal adj.
Brit. /ˌtrʌɪpᵻˈramᵻdl/
,
U.S. /ˌtraɪpəˈræməd(ə)l/
Crystallography characterized by three types of pyramid: applied to a class of the hexagonal system.
triquadrantal adj.
Brit. /ˌtrʌɪkwɒˈdrantl/
,
U.S. /ˌtraɪkwɑˈdræn(t)l/
Geometry formed by three quadrants, as a spherical triangle.
ΘΚΠ
the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > with particular section or base > triangular
trigonal1571
trihedral angle1789
triquadrantal1896
1896 C. W. Crockett Elem. Plane & Sph. Trigon. 126 A triquadrantal triangle has three sides each equal to a quadrant.
trirectangular adj.
Brit. /ˌtrʌɪrɛkˈtaŋɡjᵿlə/
,
U.S. /ˌtraɪrɛkˈtæŋɡjələr/
having three right angles, as a spherical triangle (Worcester, 1860).
ΘΚΠ
the world > relative properties > number > geometry > shape or figure > [adjective] > having specific property > having angles > having three right angles
trirectangular1896
1896 C. W. Crockett Elem. Plane & Sph. Trigon. 126 A tri~rectangular triangle is also triquadrantal.
Categories »
trirhombohedral adj.
Brit. /ˌtrʌɪrɒmbəˈhiːdr(ə)l/
,
U.S. /ˌtraɪrɑmboʊˈhidrəl/
Crystallography characterized by three types of rhombohedron: applied to a class of the hexagonal system.
trisceptral adj.
Brit. /(ˌ)trʌɪˈsɛptr(ə)l/
,
U.S. /ˌtraɪˈsɛptrəl/
having, or pertaining to, three sceptres.
ΘΚΠ
society > authority > office > symbol of office or authority > regalia > [adjective] > having or relating to three sceptres
tri-sceptred1792
trisceptrala1886
a1886 S. Ferguson Ogham Inscript. (1887) 153 This symbol in a bi-sceptral form traverses the crescent; in a tri-sceptral form, the other emblem.
trisensory adj.
Brit. /(ˌ)trʌɪˈsɛns(ə)ri/
,
U.S. /ˌtraɪˈsɛnsəri/
pertaining to or affecting three of the senses.
ΘΚΠ
the world > physical sensation > physical sensibility > [adjective] > of or relating to the senses > two or more
bisensory1894
trisensory1894
multisensory1912
intersensory1933
intersensorial1935
multisensual1967
1894 Proc. Soc. Psychical Res. 10 194 In these ‘bisensory’ or ‘trisensory’ cases, the constructive imagination seems to have reached a higher point than in simple visual or auditory hallucinations.
1895 Edinb. Rev. Jan. 108 A ‘trisensory hallucination’, ‘visual’, ‘auditory’, and ‘tactile’.
1903 F. W. H. Myers Human Personality I. 254.
trisepalous adj.
Brit. /(ˌ)trʌɪˈsɛp(ə)ləs/
,
/(ˌ)trʌɪˈsiːp(ə)ləs/
,
U.S. /ˌtraɪˈsip(ə)ləs/
,
/ˌtraɪˈsɛp(ə)ləs/
Botany having or consisting of three sepals. [After scientific Latin trisepalus (1790 or earlier).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having calyx > of, having, or positioned near sepals
two-sepalled1821
polysepalous1829
tetrasepalous1829
monosepalous1830
sepaloid1830
trisepalous1830
valvate1830
synsepalous1847
sepaline1857
tripaleolate1866
antisepalous1878
1830 J. Lindley Introd. Nat. Syst. Bot. 286 Tri~sepalous calyx.
triseptate adj.
Brit. /(ˌ)trʌɪˈsɛpteɪt/
,
U.S. /ˌtraɪˈsɛpˌteɪt/
having three septa or partitions. [After scientific Latin triseptatus (1816 or earlier).]
ΘΚΠ
the world > plants > part of plant > cell or aggregate tissue > [adjective] > of or having cell wall
septiferous1807
parietal1819
triseptate1874
periclinal1882
1874 M. C. Cooke Fungi 27 The spores..at first unilocular, but afterwards triseptate.
triserial adj.
Brit. /(ˌ)trʌɪˈsɪərɪəl/
,
U.S. /ˌtraɪˈsɪriəl/
= triseriate adj. [After scientific Latin triserialis (1802 or earlier).]
ΘΚΠ
the world > space > relative position > arrangement or fact of being arranged > arrangement in (a) row(s) or line(s > [adjective] > having or in specific number of rows > specific
biserial?1839
biseriate1846
triseriate1857
triserial1866
1866 J. Lindley & T. Moore Treasury Bot. II. 1174 Triserial, in three rows.
triserially adv.
Brit. /(ˌ)trʌɪˈsɪərɪəli/
,
U.S. /ˌtraɪˈsɪriəli/
ΘΚΠ
the world > space > relative position > arrangement or fact of being arranged > arrangement in (a) row(s) or line(s > [adverb] > in three rows
triserially1891
1891 Cent. Dict. Triserially, in three series; so as to be triserial.
triseriate adj.
Brit. /(ˌ)trʌɪˈsɪərɪət/
,
U.S. /ˌtraɪˈsɪriət/
arranged in three series or rows. [After scientific Latin triseriatus (1802 or earlier).]
ΘΚΠ
the world > space > relative position > arrangement or fact of being arranged > arrangement in (a) row(s) or line(s > [adjective] > having or in specific number of rows > specific
biserial?1839
biseriate1846
triseriate1857
triserial1866
1857 A. Gray First Lessons Bot. Gloss. 234 Triserial, or Triseriate, in three rows, under each other.
Thesaurus »
Categories »
trisetose adj.
Brit. /(ˌ)trʌɪˈsiːtəʊs/
,
/(ˌ)trʌɪˈsiːtəʊz/
,
U.S. /ˌtraɪˈsiˌtoʊs/
,
/ˌtraɪˈsiˌtoʊz/
Entomology bearing three setæ or bristles ( Cent. Dict. 1891).
trisinuate adj.
Brit. /(ˌ)trʌɪˈsɪnjʊət/
,
/(ˌ)trʌɪˈsɪnjʊeɪt/
,
U.S. /ˌtraɪˈsɪnjəwət/
,
/ˌtraɪˈsɪnjuˌeɪt/
= trisinuated adj. [After scientific Latin trisinuatus (1802 or earlier).]
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > having three inward curves
trisinuated1849
trisinuate1891
1891 Cent. Dict. Trisinuate.
trisinuated adj.
Brit. /(ˌ)trʌɪˈsɪnjʊeɪtᵻd/
,
U.S. /ˌtraɪˈsɪnjuˌeɪdᵻd/
having three sinuses or inward curves, as the margin of an insect's wing.
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > having three inward curves
trisinuated1849
trisinuate1891
1849 Johnston in Hist. Berwickshire Naturalists' Club 2 No. 7. 366 The frontal margin trisinuated.
trispermous adj.
Brit. /(ˌ)trʌɪˈspəːməs/
,
U.S. /ˌtraɪˈspərməs/
Botany containing three seeds.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > plant having seed > [adjective] > of specific number or many
monospermous1687
polyspermous1687
polysperm1729
dispermous1760
tetraspermous1760
trispermous1760
one-seededa1794
monosperm1838
dispermatous1854
monospermal1857
monospermatous1857
polyspermatous1858
tetraspermal1860
tetraspermatous1860
polyspermal1882
monospermic1891
1760 J. Lee Introd. Bot. ii. xxxiii. 156 Rhamnus, with a trispermous Fruit.
trispinose adj.
Brit. /(ˌ)trʌɪˈspʌɪnəʊs/
,
U.S. /ˌtraɪˈspaɪˌnoʊz/
,
/ˌtraɪˈspaɪˌnoʊs/
having three spines. [After scientific Latin trispinosus (1780 or earlier).]
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > slender or pointed > tending to become a spine or spinous > having three spines
trispinose1819
trispinous1828
1819 G. Samouelle Entomologist's Compend. 93 Interior antennæ with the first joint of the peduncle trispinose.
trispinous adj.
Brit. /(ˌ)trʌɪˈspʌɪnəs/
,
U.S. /ˌtraɪˈspaɪnəs/
Natural History = trispinose adj.
ΘΚΠ
the world > animals > animal body > general parts > [adjective] > slender or pointed > tending to become a spine or spinous > having three spines
trispinose1819
trispinous1828
1828 J. Stark Elements Nat. Hist. II. 162 Thorax granulated, carinated, trispinous.
trisplanchnic adj.
Brit. /(ˌ)trʌɪˈsplaŋknɪk/
,
U.S. /ˌtraɪˈsplæŋknɪk/
Anatomy applied to the sympathetic nerve, as having connections with the viscera of the three great cavities (cranial, thoracic, abdominal) of the body. [Compare scientific Latin trisplanchnicus, French trisplanchnique (both 1792 or earlier).]
ΘΚΠ
the world > life > the body > nervous system > nerve > specific nerves > [adjective] > nerves of trunk
trisplanchnic1826
sciatical1838
sciatic1871
1826 W. Kirby & W. Spence Introd. Entomol. IV. xxxvii. 4 Called the great sympathetic, the intercostal, or trisplanchnic nerves.
1842 R. Dunglison Med. Lexicon (ed. 3) Trisplanchnic Nerve, great sympathetic, intercostal, ganglionic nerve.
trisporic adj.
Brit. /(ˌ)trʌɪˈspɔːrɪk/
,
/(ˌ)trʌɪˈspɒrɪk/
,
U.S. /ˌtraɪˈspɔrɪk/
Botany having or consisting of three spores.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > [adjective] > having specific number of spores
monosporous1857
octosporous1857
trisporic1866
monospored1882
trisporous1891
1866 J. Lindley & T. Moore Treasury Bot. II. 1174 Trisporic.
trisporous adj.
Brit. /(ˌ)trʌɪˈspɔːrəs/
,
U.S. /ˌtraɪˈspɔrəs/
Botany = trisporic adj.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > spore or sporule > [adjective] > having specific number of spores
monosporous1857
octosporous1857
trisporic1866
monospored1882
trisporous1891
1891 Cent. Dict. Trisporous.
tristachyous adj.
Brit. /(ˌ)trʌɪˈstakɪəs/
,
U.S. /ˌtraɪˈstækiəs/
Botany having three spikes. [ < tri- comb. form + ancient Greek στάχυς ear of corn, spike (see stachys n.) + -ous suffix, after scientific Latin tristachyua, specific epithet (1784).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > inflorescence or collective flower > [adjective] > having particular shape, type, or arrangement > of a spike > bearing a spike
spiked1597
spicate1668
spiculate1832
tristachyous1891
1891 Cent. Dict. Tristachyous.
tristigmatic adj.
Brit. /ˌtrʌɪstɪɡˈmatɪk/
,
U.S. /ˌtraɪstɪɡˈmædɪk/
Botany = tristigmatose adj.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having style, pistil, or female parts > having specific quantity, form, or arrangement
capitated1682
included1751
pinheaded1751
monogynous1757
pentagynous1772
trigynous1775
monogynian1787
polygynous1795
pin-eyed1810
heptagynian1828
pentagynian1828
polygynian1828
tetragynian1828
octagynous1836
stigmatose1840
polygynious1841
heptagynious1854
monogynious1857
octagynious1857
pentagynious1857
tetragynious1860
tetrastylous1860
trigynious1860
monogynic1891
tristigmatose1891
tristylous1891
tetragynous1899
tristigmatic1900
1900 in B. D. Jackson Gloss. Bot. Terms Tristigmatic.
tristigmatose adj.
Brit. /(ˌ)trʌɪˈstɪɡmətəʊs/
,
U.S. /ˌtraɪˈstɪɡməˌtoʊz/
,
/ˌtraɪˈstɪɡməˌtoʊs/
Botany having three stigmas.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having style, pistil, or female parts > having specific quantity, form, or arrangement
capitated1682
included1751
pinheaded1751
monogynous1757
pentagynous1772
trigynous1775
monogynian1787
polygynous1795
pin-eyed1810
heptagynian1828
pentagynian1828
polygynian1828
tetragynian1828
octagynous1836
stigmatose1840
polygynious1841
heptagynious1854
monogynious1857
octagynious1857
pentagynious1857
tetragynious1860
tetrastylous1860
trigynious1860
monogynic1891
tristigmatose1891
tristylous1891
tetragynous1899
tristigmatic1900
1891 Cent. Dict. Tristigmatic..Tristigmatose.
tristylous adj.
Brit. /(ˌ)trʌɪˈstʌɪləs/
,
U.S. /ˌtraɪˈstaɪləs/
Botany having three styles. [After scientific Latin and post-classical Latin tristylus (1673 or earlier).]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having style, pistil, or female parts > having specific quantity, form, or arrangement
capitated1682
included1751
pinheaded1751
monogynous1757
pentagynous1772
trigynous1775
monogynian1787
polygynous1795
pin-eyed1810
heptagynian1828
pentagynian1828
polygynian1828
tetragynian1828
octagynous1836
stigmatose1840
polygynious1841
heptagynious1854
monogynious1857
octagynious1857
pentagynious1857
tetragynious1860
tetrastylous1860
trigynious1860
monogynic1891
tristigmatose1891
tristylous1891
tetragynous1899
tristigmatic1900
1891 Cent. Dict. Tristylous.
1900 in B. D. Jackson Gloss. Bot. Terms
triverbal adj.
Brit. /(ˌ)trʌɪˈvəːbl/
,
U.S. /ˌtraɪˈvərb(ə)l/
consisting of three words.
ΘΚΠ
the mind > language > linguistics > linguistic unit > word > [adjective] > having or relating to specific number of words
many-worded1798
triverbal1817
diverbal1826
monepica1832
1817 J. Mill Hist. Brit. India I. ii. vi. 279 The triverbal phrase, and the triliteral syllable.
triverbial adj.
Brit. /(ˌ)trʌɪˈvəːbɪəl/
,
U.S. /ˌtraɪˈvərbiəl/
see quot. [ < tri- comb. form + classical Latin verbum word (see verb n.) + -ial suffix, after classical Latin tria verba three words, with reference to the three words the praetor was permitted to speak on this day (see quot. 1768).]
ΘΚΠ
society > law > administration of justice > judicial body, assembly, or court > a or the session of a court > [adjective] > day when cause can be heard
triverbial1768
1768 W. Blackstone Comm. Laws Eng. III. xxvi. 424 In the Roman calendar there were in the whole year but twenty eight judicial or triverbial days allowed to the praetor for hearing causes [note, Otherwise called dies fasti, in quibus licebat praetori fari tria verba, do, dico, addico].
trivertebral adj.
Brit. /(ˌ)trʌɪˈvəːtᵻbr(ə)l/
,
U.S. /ˌtraɪˈvərdəbrəl/
,
/ˌtraɪvərˈtibrəl/
Anatomy consisting of three vertebræ united.
ΘΚΠ
the world > life > the body > structural parts > bone or bones > spine > [adjective] > vertebra of > composed or consisting of > specific number
trivertebral1871
1871 T. H. Huxley Man. Anat. Vertebrated Animals viii. 341 The last cervical and the anterior dorsal vertebræ [in Glyptodon] are ankylosed together into a single ‘tri-vertebral’ bone.
trivirgate adj.
Brit. /(ˌ)trʌɪˈvəːɡət/
,
/(ˌ)trʌɪˈvəːɡeɪt/
,
U.S. /ˌtraɪˈvərɡət/
,
/ˌtraɪˈvərˌɡeɪt/
Zoology marked with three streaks or stripes. [After scientific Latin trivirgatus (1824), trivirgata (1809).]
ΘΚΠ
the world > animals > animal body > markings or colourings > [adjective] > striped or lined > marked with three lines
trifasciated1777
trilineated1802
trivirgate1863
trilineate1891
1863 Ibis 5 15 Acc[ipiter] nisoides..closely resembles the preceding one, A. nisus, but is smaller, with trivirgate throat.
trivoluminous adj.
Brit. /ˌtrʌɪvəˈl(j)uːmᵻnəs/
,
U.S. /ˌtraɪvəˈlumənəs/
consisting of three volumes; composing a work in three volumes.
ΘΚΠ
society > communication > book > kind of book > [adjective] > consisting of specific number of volumes
trivoluminous1857
monotome1872
1857 C. Reade Course True Love 191 Paper is not absolutely valueless, whatever the trivoluminous may think.
1892 Athenæum 31 Dec. 914/2 In tri-voluminous fiction.
trizomal adj.
Brit. /(ˌ)trʌɪˈzəʊml/
,
U.S. /ˌtraɪˈzoʊm(ə)l/
Geometry applied to a curve having an equation of the form √ U + √ V + √ W = 0: cf. polyzome n., and tetra- comb. form. [ < tri- comb. form + ancient Greek ζῶμα girdle (see diazoma n.) + -al suffix1.]
ΘΚΠ
the world > relative properties > number > geometry > curve > [adjective] > other
caustic1728
hypotrochoidal1843
hodographic1847
Pippian1857
tetrazomal1867
trizomal1867
three-bar1875
sinusoidal1878
1867 A. Cayley Coll. Math. Papers VI. 485 On the Trizomal Curve and the Tetrazomal Curve.
(b) With English nouns (without adjective ending); chiefly nonce-words instead of the usual formations in three-.
tri-church adj.
Brit. /(ˌ)trʌɪˈtʃəːtʃ/
,
/ˈtrʌɪtʃəːtʃ/
,
U.S. /ˌtraɪˈtʃərtʃ/
,
/ˈtraɪˌtʃərtʃ/
ΚΠ
1907 Daily News 13 Mar. 2 The Tri-Church Conference of the Congregational, United Brethren, and Methodist Protestant Churches of the United States.
tri-county n. and adj.
Brit. /(ˌ)trʌɪˈkaʊnti/
,
/ˈtrʌɪkaʊnti/
,
U.S. /ˌtraɪˈkaʊn(t)i/
,
/ˈtraɪˌkaʊn(t)i/
ΘΚΠ
society > authority > rule or government > territorial jurisdiction or areas subject to > an administrative division of territory > [adjective] > relating to a county > to three counties
tri-county1974
1974 News & Courier (Charleston, S. Carolina) 19 Apr. 6- a/1 A municipal scramble for federal recreation funds is under way in the tri-county.
1978 Detroit Free Press 5 Mar. 13/2 These centers cater to some 150,000 deaf adults in the tri-county area.
tri-letter adj.
Brit. /(ˌ)trʌɪˈlɛtə/
,
/ˈtrʌɪlɛtə/
,
U.S. /ˌtraɪˈlɛdər/
,
/ˈtraɪˌlɛdər/
ΚΠ
1902 Westm. Gaz. 6 Aug. 6/1 A new telegraphic code has been invented..known as Baldrey's Tri-Letter Code... Every word in any language is represented by three letters only.
tri-party adj.
Brit. /(ˌ)trʌɪˈpɑːti/
,
/ˈtrʌɪpɑːti/
,
U.S. /ˌtraɪˈpɑrdi/
,
/ˈtraɪˌpɑrdi/
ΚΠ
1907 Daily Chron. 11 Mar. 4/4 The great danger ahead of Australia is..her tri-party system of government, which places parties in office that do not command the confidence of the country.
tri-phase adj.
Brit. /(ˌ)trʌɪˈfeɪz/
,
/ˈtrʌɪfeɪz/
,
U.S. /ˌtraɪˈfeɪz/
,
/ˈtraɪˌfeɪz/
ΚΠ
1900 Engin. Mag. 19 778/2 The Central Station of the ‘Tri-Phase’ Company at Asnières, Seine..which will furnish tri-phase currents to Paris.
tri state adj.
Brit. /ˌtrʌɪ ˈsteɪt/
,
/ˈtrʌɪ steɪt/
,
U.S. /ˌtraɪ ˈsteɪt/
,
/ˈtraɪ ˌsteɪt/
ΘΚΠ
society > authority > rule or government > a or the state > [adjective] > of or relating to a confederation of states > of or relating to state of U.S.A. > three
tri state1963
1963 Times 15 Jan. 9/6 A tri-state transportation committee is carrying out a survey..of New York, New Jersey, and Connecticut.
1983 Listener 22 Sept. 5/2 The attractions of the US market—and the New York tri-state area in particular—have been appreciated for a long time.
(c) Occasionally with noun + -ed suffix2 (instead of the usual three-..ed).
tri-bladed adj.
Brit. /(ˌ)trʌɪˈbleɪdᵻd/
,
U.S. /ˌtraɪˈbleɪdᵻd/
ΚΠ
1890 H. M. Stanley In Darkest Afr. II. xxi. 22 Tri-bladed and four-bladed knives were shown to me.
tri-breakered adj.
Brit. /(ˌ)trʌɪˈbreɪkəd/
,
U.S. /ˌtraɪˈbreɪkərd/
ΚΠ
1834 T. Medwin Angler in Wales I. 258 Along the tri-breakered sea-shore.
tri-cornered adj.
Brit. /(ˌ)trʌɪˈkɔːnəd/
,
U.S. /ˌtraɪˈkɔrnərd/
ΚΠ
1819 J. Keats Let. to G. & Georgiana Keats 13 Mar. The black badger with tri-cornered hat.
1903 Bradford Antiq. July 348 Tricornered bits of wood.
tri-faced adj.
Brit. /(ˌ)trʌɪˈfeɪst/
,
U.S. /ˌtraɪˈfeɪst/
ΚΠ
1834 A. Burnes Trav. Bokhara I. vi. 187 The great trifaced idol of Elephanta.
tri-legged adj.
Brit. /(ˌ)trʌɪˈlɛɡ(ᵻ)d/
,
U.S. /ˌtraɪˈlɛɡ(ə)d/
ΚΠ
1844 M. F. Tupper Crock of Gold ii A ricketty triangular and trilegged table.
tri-membered adj.
Brit. /(ˌ)trʌɪˈmɛmbəd/
,
U.S. /ˌtraɪˈmɛmbərd/
ΘΚΠ
the world > relative properties > number > specific numbers > three > condition of being threefold > [adjective] > having a triple form
triformc1450
triple1567
tri-membered1626
triformed1644
triformous1841
tri-dimensional1858
tripliform1866
trilobal1884
1626 W. Prynne Perpetuitie Regenerate Mans Estate 331 A threefold and trimembred objection.
tri-pointed adj.
Brit. /(ˌ)trʌɪˈpɔɪntᵻd/
,
U.S. /ˌtraɪˈpɔɪn(t)ᵻd/
ΚΠ
1606 J. Sylvester tr. G. de S. Du Bartas Deuine Weekes & Wks. (new ed.) ii. iii. 71 'Gainst the tri-pointed wrathfull violence Of the dread dart.
tri-sceptred adj.
Brit. /(ˌ)trʌɪˈsɛptəd/
,
U.S. /ˌtraɪˈsɛptərd/
ΘΚΠ
society > authority > office > symbol of office or authority > regalia > [adjective] > having or relating to three sceptres
tri-sceptred1792
trisceptrala1886
1792 J. Barlow Conspiracy of Kings 78 The tri~sceptred prince, of Austrian mould... Theresa's son.
tri-shaped adj.
Brit. /(ˌ)trʌɪˈʃeɪpt/
,
U.S. /ˌtraɪˈʃeɪpt/
ΚΠ
1613 T. Heywood Siluer Age iii. sig. Kv The triple-headed dogge..Hels tri-shap't porter.
tri-zoned adj.
Brit. /(ˌ)trʌɪˈzəʊnd/
,
U.S. /ˌtraɪˈzoʊnd/
ΚΠ
1840 R. H. Horne Gregory VII (ed. 2) v. iv. 100 Tri-zoned Jove's star-set eternity.
b.
(a) Triply; three times; in three ways, directions, etc. Also triternate adj.
tricurvate adj.
Brit. /(ˌ)trʌɪˈkəːveɪt/
,
U.S. /ˌtraɪˈkərˌveɪt/
‘curved in three directions, as a sponge-spicule’ ( Funk's Stand. Dict.).
triequal adj.
Brit. /(ˌ)trʌɪˈiːkw(ə)l/
,
U.S. /ˌtraɪˈikw(ə)l/
constituting three that are equal.
ΘΚΠ
the world > relative properties > number > specific numbers > three > [adjective] > constituting three that are equal
triequal1848
1848 P. J. Bailey Festus (ed. 3) 44 Injustice, hate, uncharitableness, Triequal reign round earth, a Trinity of Hell.
trigoneutic adj.
Brit. /ˌtrʌɪɡə(ʊ)ˈnjuːtɪk/
,
U.S. /ˌtraɪɡəˈn(j)udɪk/
producing three broods in a year, as certain insects (cf. trivoltin n. at sense 2b).
trigoneutism n.
Brit. /ˌtrʌɪɡə(ʊ)ˈnjuːtɪz(ə)m/
,
U.S. /ˌtraɪɡəˈn(j)uˌtɪz(ə)m/
trilarcenous adj.
Brit. /(ˌ)trʌɪˈlɑːsᵻnəs/
,
/(ˌ)trʌɪˈlɑːsn̩əs/
,
U.S. /ˌtraɪˈlɑrsənəs/
,
/ˌtraɪˈlɑrsn̩əs/
three times convicted of larceny.
ΘΚΠ
society > law > rule of law > lawlessness > [adjective] > three times convicted of larceny
trilarcenous1823
1823 S. Smith Botany Bay in Wks. (1850) 369 The man of three juries, who has three times appeared at the Bailey, trilarcenous.
triquadrifid adj.
Brit. /(ˌ)trʌɪˈkwɒdrᵻfɪd/
,
U.S. /ˌtraɪˈkwɑdrəˌfɪd/
Botany having three lobes each deeply divided into four segments.
ΘΚΠ
the world > plants > part of plant > part defined by form or function > [adjective] > divided, segmented, slashed, or lobed
lobated1703
quinquefid1703
lobousa1722
biparted1725
tripartite1753
lobate1760
octofid1760
septemfid1777
parted1785
triquadrifid1833
rimiform1837
slashed1839
lobulate1862
bipartite1864
palmilobed1876
pentafid1882
segmented1883
lobose1885
torn1888
triquinate1891
sectile1899
1833 W. J. Hooker in J. E. Smith Eng. Flora V. i. 113 The upper leaves..are tri-quadrifid.
triquinate adj.
Brit. /(ˌ)trʌɪˈkwʌɪneɪt/
,
U.S. /ˌtraɪˈkwaɪˌneɪt/
Botany having three lobes each divided into five. [After scientific Latin triquinatus (1819 or earlier).]
ΘΚΠ
the world > plants > part of plant > part defined by form or function > [adjective] > divided, segmented, slashed, or lobed
lobated1703
quinquefid1703
lobousa1722
biparted1725
tripartite1753
lobate1760
octofid1760
septemfid1777
parted1785
triquadrifid1833
rimiform1837
slashed1839
lobulate1862
bipartite1864
palmilobed1876
pentafid1882
segmented1883
lobose1885
torn1888
triquinate1891
sectile1899
1891 Cent. Dict. Triquinate.
trisonant adj.
Brit. /ˈtrʌɪsənənt/
,
U.S. /ˈtraɪsənənt/
sounding in three ways; in quot. loosely, comprising three classes of vocal sounds.
ΘΚΠ
the mind > language > linguistics > study of speech sound > speech sound > [adjective] > comprising three classes of
trisonant1876
1876 T. Le M. Douse Grimm's Law xlvii. 97 The priority of any one of the known tri-sonant systems over the others is untenable.
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Categories »
trisquare n.
Brit. /ˈtrʌɪskwɛː/
,
U.S. /ˈtraɪˌskwɛ(ə)r/
‘three-square; having three equally wide plane faces’ ( Cent. Dict. Suppl. 1909).
Categories »
tritactic adj.
Brit. /(ˌ)trʌɪˈtaktɪk/
,
U.S. /ˌtraɪˈtæktɪk/
Geometry having or involving three coincident points of contact.
(b) spec. in Crystallography denoting forms having three ranges of facets, the number in each range being expressed by the second element.
tri-dodecahedral adj.
Brit. /ˌtrʌɪdəʊdɛkəˈhiːdr(ə)l/
,
U.S. /ˌtraɪdoʊˌdɛkəˈhidrəl/
ΘΚΠ
the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [adjective] > miscellaneous others
secondary1816
trapezian1816
triacontahedral1816
tri-dodecahedral1816
tri-hexahedral1816
tri-octahedral1816
tri-rhomboidal1816
octodecimal1817
octoduodecimal1817
octosexdecimal1817
pentahexahedral1817
octahedrala1824
trigonal1878
pinacoidal1879
tetartopyramid1891
trisoctahedral1891
tetartohexagonal1895
tetartosystematic1895
1816 R. Jameson Treat. External Characters Minerals (ed. 2) 200 Tri-dodecahedral red silver-ore..is a six sided prism, acuminated on the extremities with three planes, and truncated on all the edges.
tri-hexahedral adj.
Brit. /ˌtrʌɪhɛksəˈhiːdr(ə)l/
,
U.S. /ˌtraɪhɛksəˈhidrəl/
ΘΚΠ
the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [adjective] > miscellaneous others
secondary1816
trapezian1816
triacontahedral1816
tri-dodecahedral1816
tri-hexahedral1816
tri-octahedral1816
tri-rhomboidal1816
octodecimal1817
octoduodecimal1817
octosexdecimal1817
pentahexahedral1817
octahedrala1824
trigonal1878
pinacoidal1879
tetartopyramid1891
trisoctahedral1891
tetartohexagonal1895
tetartosystematic1895
1816 R. Jameson Treat. External Characters Minerals (ed. 2) 199 Tri-hexahedral,..when [the crystal's] surface consists of three.. ranges of planes, disposed six and six above each other... Tri-hexahedral nitrate of potash..; which is a six-sided prism, acuminated on both extremities with six planes.
tri-octahedral adj.
Brit. /ˌtrʌɪɒktəˈhiːdr(ə)l/
,
U.S. /ˌtraɪɑktəˈhidrəl/
ΘΚΠ
the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [adjective] > miscellaneous others
secondary1816
trapezian1816
triacontahedral1816
tri-dodecahedral1816
tri-hexahedral1816
tri-octahedral1816
tri-rhomboidal1816
octodecimal1817
octoduodecimal1817
octosexdecimal1817
pentahexahedral1817
octahedrala1824
trigonal1878
pinacoidal1879
tetartopyramid1891
trisoctahedral1891
tetartohexagonal1895
tetartosystematic1895
1816 R. Jameson Treat. External Characters Minerals (ed. 2) 200 Tri-octahedral sulphat of lead,..a four-sided pyramid,..the edges of the common base truncated, the angles on it very deeply bevelled, the bevelling planes set on the lateral edges, and the bevelling edges again deeply truncated, so that the crystal..consists of three rows of planes, of which each row contains eight planes.
tri-rhomboidal adj.
Brit. /ˌtrʌɪrɒmˈbɔɪdl/
,
U.S. /ˌtraɪrɑmˈbɔɪd(ə)l/
having eighteen faces occupying the positions of those of three different rhomboids.
ΘΚΠ
the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [adjective] > miscellaneous others
secondary1816
trapezian1816
triacontahedral1816
tri-dodecahedral1816
tri-hexahedral1816
tri-octahedral1816
tri-rhomboidal1816
octodecimal1817
octoduodecimal1817
octosexdecimal1817
pentahexahedral1817
octahedrala1824
trigonal1878
pinacoidal1879
tetartopyramid1891
trisoctahedral1891
tetartohexagonal1895
tetartosystematic1895
1816 R. Jameson Treat. External Characters Minerals (ed. 2) 197 Tri-rhomboidal; this, in the Wernerian Crystallography, is a double six-sided pyramid, with alternately broad and narrow lateral planes,..and..acuminated on the extremities with three planes, which are set on the smaller lateral planes. Example, Tri-rhomboidal calcareous-spar.
c. In combination with an adjective (usually in -ly) derived from a noun denoting a period of time: Comprising three ——, lasting three ——, occurring or appearing every three (days, etc.); also (loosely) occurring three times (a day, etc.); those in -ly are also used as adverbs = every three (days, etc.) or three times a (day, etc.). See also trimonthly adj., tri-weekly adj.; triannual adj., tridiurnal adj., etc.
(a)
tridaily adj.
Brit. /(ˌ)trʌɪˈdeɪli/
,
U.S. /ˌtraɪˈdeɪli/
ΚΠ
1887 Science 9 79 The system of tridaily [meteorological] observations.
(b)
trihoral adj.
Brit. /(ˌ)trʌɪˈhɔːrəl/
,
/(ˌ)trʌɪˈhɔːrl̩/
,
U.S. /ˌtraɪˈhɔrəl/
ΚΠ
1860 J. E. Worcester Dict. Eng. Lang. (citing Ld. Ellesmere) Trihoral.
2. Forming nouns, with the senses:
a. Something consisting of or equivalent to three (of the things denoted by the second element); a triple ——.
triachaenium n.
Brit. /ˌtrʌɪəˈkiːnɪəm/
,
U.S. /ˌtraɪəˈkiniəm/
(irreg. triakenium) Botany a fruit composed of three achenes. [ < scientific Latin triachenium (1825 or earlier) < French triakène (1819 in Richard, or earlier) < tri- tri- comb. form + akène achene n.]
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > fruit or reproductive product > [noun] > indehiscent fruit or achene
key1440
samara1577
achenium1819
achene1825
caryopsis1830
key fruit1849
tetrachaenium1856
cremocarp1861
Cypsela1861
achaenocarp1874
triachaenium1882
pseudospermium1890
1882 Ogilvie's Imperial Dict. (new ed.) Triachenium, triakenium.
1900 in B. D. Jackson Gloss. Bot. Terms Triachænium.
triaster n.
Brit. /ˈtrʌɪastə/
,
U.S. /ˈtraɪˌæstər/
Biology a figure bearing some resemblance to three conjoined stars, resulting from a tripolar division of a nucleus. [ < tri- comb. form + -aster suffix; compare diaster n.]
ΚΠ
1894 W. Bateson Materials Study Variation i. xvi. 431 (note) A case of the presence of triasters in two bilaterally symmetrical tracts of the blastoderm of Loligo.
1909 J. W. Jenkinson Exper. Embryol. 30 Triaster, a tripolar figure with three spindles.
† tricube n. Mathematics Obsolete the third power of a cube, a ninth power.
ΘΚΠ
the world > relative properties > number > arithmetic or algebraic operations > [noun] > multiplication > into or by itself > other
bissursolid1557
cubi-cubic number1557
surdesolid1557
sursolid1557
quadrato-quadrate1654
quaquadratea1690
quinquadratea1690
tricubea1690
triquadratea1690
supersolid1705
biquadrate1706
biquadratic1728
a1690 S. Jeake Λογιστικηλογία (1696) 273 Some to shorten..the long Names of..Higher Powers..call..ϕϕ a Bicube, ϕϕϕ a Tricube &c.
† tridiaˈpason n. Music Obsolete an interval of three octaves, a twenty-second.
ΘΚΠ
society > leisure > the arts > music > musical sound > pitch > interval > [noun] > three octaves
trisdiapason1677
twenty-secondc1700
tridiapason1806
1806 T. Busby Compl. Dict. Music (ed. 2) Tri-Diapason, a triple octave, or twenty-second.
† trifluctuˈation n. Obsolete see quot.
ΘΚΠ
the world > action or operation > continuing > progress, advance, or further continuance > [noun] > continuous progress or advance of anything > great or irresistible
land-flood1579
trifluctuation1646
wave1851
tidal wave1870
1646 Sir T. Browne Pseudodoxia Epidemica vii. xvii. 377 Τρικυμία..is a concurrence of three waves in one, whence arose the proverb, τρικυμία κακῶν, or a trifluctuation of evils. View more context for this quotation
trihemiobol n.
Brit. /ˌtrʌɪhɛmɪˈɒb(ɒ)l/
,
U.S. /ˌtraɪhɛmiˈɑb(ə)l/
an ancient Greek coin of the value of 1½ obols. [ < ancient Greek τριημιωβόλιον < τρι- tri- comb. form + ἡμι- hemi- prefix + ὀβολός obolus n. + -ιον, suffix forming diminutives; compare French trihémiobole (1817 or earlier), German Trihemiobolion (1838 or earlier).]
ΘΚΠ
society > trade and finance > money > medium of exchange or currency > coins collective > classical coins > [noun] > ancient Greek
obolOE
drachmc1384
mnamc1400
dramc1440
mina1495
groat1526
didrachm1548
drachma1579
obolus1579
tetradrachm1579
obole1598
philippic1651
stater1685
tetrobol1693
tridrachm1771
pentadrachm1827
triobol1837
octadrachm1848
decadrachm1856
lepton1877
dodecadrachm1881
diobol1887
trihemiobol1887
distater1895
hemiobol1921
1887 B. V. Head Historia Numorum 336 There are also trihemiobols..of later style, for the Pegasus on the obverse has pointed wings.
trijunction n.
Brit. /(ˌ)trʌɪˈdʒʌŋ(k)ʃn/
,
U.S. /ˌtraɪˈdʒəŋ(k)ʃ(ə)n/
a junction or union of three.
ΘΚΠ
the world > relative properties > wholeness > mutual relation of parts to whole > fact or action of being joined or joining > [noun] > a join or junction > a junction of three
trijunction1887
1887 Athenæum 29 Jan. 164/2 To have the trijunction of Tibet, India, and Burma focussed within the four corners of a map.
† triˈmillion n. Obsolete the third power of a million; also (quot. 1707) a thousand thousand millions, i.e. a billion (= trillion n. in both senses: cf. etymology of billion n.). [After French trimillion (1705 in the passage translated in quot. 1707); compare German Trimillion (1696 or earlier).]
ΘΚΠ
the world > relative properties > number > specific numbers > hundred and over > [noun] > million million
great million1635
billion1690
trimillion1707
the world > relative properties > number > specific numbers > hundred and over > [noun] > powers of a million
quadrilliona1690
quintilliona1690
trilliona1690
nonillion1690
octillion1690
septillion1690
sextillion1690
trimillion1707
decillion1709
centillion1754
sexillion1758
vigintillion1928
googol1940
googolplex1940
squillion1943
1707 tr. P. Le Lorrain de Vallemont Curiosities in Husbandry & Gardening 155 These ten Thousand Willows..will produce each of them likewise a hundred more. Thus we have a Million; then a hundred Millions: next come the Tens of Bimillions; then the Trimillions [Fr. trimillions].
1798 C. Hutton Course Math. I. 5 The name of the first period being units; of the second, millions; of the third, millions of millions, or bi-millions, contracted to billions; of the fourth, millions of millions of millions, or tri-millions, contracted to trillions.
trimillionaire n.
Brit. /ˌtrʌɪmɪljəˈnɛː/
,
U.S. /ˌtraɪmɪljəˈnɛ(ə)r/
,
/ˌtraɪˈmɪljəˌnɛ(ə)r/
a person possessed of three millions of money (pounds, dollars, francs, etc.).
ΘΚΠ
the mind > possession > wealth > [noun] > rich or wealthy person > person who has large amount of money
jingle-boya1640
four-millioneer1667
plum1709
millionary1786
millionaire1795
money bag1820
millionista1843
trimillionaire1848
multimillionaire1858
billionaire1861
millioner1865
trillionaire1873
quadrillionairea1876
thousandaire1896
milliardaire1897
multibillionaire1906
zillionaire1926
multi1950
mega-millionaire1968
squillionaire1979
1848 Tait's Edinb. Mag. 15 646 A tri-millionaire buys it for a deer-forest.
tripair n.
Brit. /ˈtrʌɪpɛː/
,
U.S. /ˈtraɪˌpɛ(ə)r/
Mathematics a set of three pairs.
ΘΚΠ
the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > set > elements in or parts of > specific number of
hebdomad1545
quaternion1549
tetractys1603
quaternary number1605
tetrad1653
heptad1660
pentad1660
quaternary of numbers1809
tripair1878
trey1887
1878 A. Cayley Coll. Math. Papers X. 450 We have thus..a system of..63 hexpairs; and selecting at pleasure any three pairs out of the same hexpair, we have a system of (63 × 20 =) 1260 tripairs.
† triˈpapalty n. Obsolete a period during which there were three rival popes.
ΘΚΠ
society > faith > church government > member of the clergy > clerical superior > pope > antipope > [noun] > period of three rival popes
tripapalty1651
1651 N. Bacon Contin. Hist. Disc. Govt. 151 During the Tripapalty, much money had been Levied..to serve for the recovery of the Popedome to one of English Interest.
† triˈquadrate n. Mathematics Obsolete the third power of a square, a sixth power.
ΘΚΠ
the world > relative properties > number > arithmetic or algebraic operations > [noun] > multiplication > into or by itself > other
bissursolid1557
cubi-cubic number1557
surdesolid1557
sursolid1557
quadrato-quadrate1654
quaquadratea1690
quinquadratea1690
tricubea1690
triquadratea1690
supersolid1705
biquadrate1706
biquadratic1728
a1690 S. Jeake Λογιστικηλογία (1696) 273 Some..call gg a Biquadrate, ggg a Triquadrate.
Thesaurus »
Categories »
tristigm n.
Brit. /ˈtrʌɪstɪm/
,
U.S. /ˈtraɪˌstɪm/
Geometry a system of three points with the straight lines connecting them ( Cent. Dict. Suppl. 1909). [ < tri- comb. form + ancient Greek στίγμα prick, point (see stigma n.).]
b. Something having, or related in some way to, three (of the things denoted or indicated by the second element).
tri-axle n.
Brit. /ˈtrʌɪaksl/
,
U.S. /ˈtraɪˌæks(ə)l/
a trailer or articulated lorry with three (rear) axles.
ΘΚΠ
society > travel > means of travel > a conveyance > vehicle > powered vehicle > motor lorry, truck, or van > [noun] > truck or lorry > articulated lorry > trailer or types of trailer
pole trailer1919
semi-trailer1919
pantech1942
Queen Mary1942
semi1942
tautliner1970
Ohio spread1971
spread1971
tri-axle1971
semi-truck1975
1971 M. Tak Truck Talk 173 Triaxle, a semi with three rear axles and consequently a greater weight-carrying allowance.
1978 Detroit Free Press 16 Apr. f 8/1 (advt.) Trailer: 1967 Ravens 29′ dump on 34′ frame, tri-axle with air-lift.
1981 Daily Tel. 10 Dec. 9 (caption) A..38-tonne tri-axle lorry.
tricephal n.
Brit. /(ˌ)trʌɪˈsɛfl/
,
U.S. /ˌtraɪˈsɛf(ə)l/
a three-headed figure or image of a deity. [After French tricéphale, noun (1860 or earlier) < ancient Greek τρικέϕαλος , adjective (see tricephalous adj. at sense 1a(a)).]
ΘΚΠ
the world > the supernatural > deity > [noun] > representation of god(s)
zoomorphism1822
theotechny1858
animalization1886
tricephal1888
theriomorphism1908
1888 J. Rhys Lect. Origin & Growth Relig. illustr. by Celtic Heathendom i. 81 (note) The wide distribution of the tri~cephal has induced M. Mowat to declare for the improbable hypothesis, that it was..but the Roman Janus..naturalized in Gaul.
triorchis n.
Brit. /(ˌ)trʌɪˈɔːkɪs/
,
U.S. /ˌtraɪˈɔrkəs/
see quot. 1842. [ < tri- comb. form + ancient Greek ὄρχις testicle (see orchis n.); compare classical Latin triorchis (noun) centaury, triorches, kind of hawk, ancient Greek τριόρχης (adjective) having three testicles, (noun), kind of hawk.]
ΘΚΠ
the world > health and disease > ill health > deformity > deformities of specific parts > [noun] > of genitalia > person
castrate1639
triorchis1650
monorchis1722
monorchid1857
eunuchoid1894
1650 H. More Observ. Anthroposophia Theomagica 29 If you have not a slight of Art to Metamorphize your selves into Triorchises.
1842 R. Dunglison Med. Lexicon (ed. 3) Triorchis, one who has three testicles.
triplane n.
Brit. /ˈtrʌɪpleɪn/
,
U.S. /ˈtraɪˌpleɪn/
an aeroplane with three supporting planes; also attributive.
ΘΚΠ
society > travel > air or space travel > a means of conveyance through the air > aeroplane > [noun] > with more than one wing either side
biplane1874
triplane1908
multiplane1909
quadruplane1909
1908 Times 3 Oct. 6/3 Experiments with a triplane machine.
1909 Westm. Gaz. 4 Mar. 4/2 In machines of the biplane and triplane types.
1909 A. Berget Conquest of Air 141 Naturally we can make triplanes or quadriplanes, but one must not proceed too far in this direction.
1920 Glasgow Herald 10 July 5 The Pullman triplanes of the British Company carry 18 people.
1977 J. Cleary High Road to China ii. 47 ‘What did you fly?’.. ‘Albatros D's and Fokker Triplanes. I was with von Richthofen.’
triquaternion n.
Brit. /ˌtrʌɪkwəˈtəːnɪən/
,
U.S. /ˌtraɪkwəˈtərniən/
Mathematics an expression of the form q1 + ωq2 + μq3, where q1, q2, q3, are quaternions, and ω and μ are commutative with quaternions.
ΘΚΠ
the world > relative properties > number > algebra > [noun] > expression > consisting of specific number of terms
binomial1557
binomy1571
trinomy1571
quadrinomial1673
multinomiala1690
polynomiala1690
trinomiala1690
monomial1706
nomial1717
monome1736
infinitinomial1763
polynome1828
mononomial1844
quantic1854
form1859
Jacobi polynomial1882
Jacobi's function1882
ternariant1882
triquaternion1902
term1957
arity1968
1902 G. Combebiac cited in Cent. Dict. Supp. for Triquaternion.
trisacramentarian n.
Brit. /ˌtrʌɪsakrəmɛnˈtɛːrɪən/
,
/ˌtrʌɪsakrəm(ə)nˈtɛːrɪən/
,
U.S. /ˌtraɪˌsækrəmənˈtɛriən/
one who recognizes three and only three sacraments.
ΘΚΠ
society > faith > worship > sacrament > [noun] > one recognizing only three
trisacramentarian1728
1728 E. Chambers Cycl. Trisacramentarians,..a Sect in Religion, who admit of three Sacraments, and no more... There have been several Trisacramentarians among the Protestants, who allow'd of Baptism, the Eucharist, and Absolution, for Sacraments.
trivoltin n.
Brit. /(ˌ)trʌɪˈvɒltɪn/
,
U.S. /ˌtraɪˈvɑltᵻn/
(also triˈvoltine) a silkworm of a breed which yields three cocoons in a year. [ < Italian trivoltini (1860 or earlier) < tri- tri- comb. form + volta turn, time (see volta n.); compare French trivoltin (1866 or earlier).]
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > Heterocera > [noun] > family Bombycidae > genus Bombyx > silk moth > caterpillar of bombyx mori or silkworm > characterized by number of broods
bivoltine1872
univoltine1872
quadrivoltine1888
trivoltin1888
polyvoltine1890
1888 E. A. Butler Silkworms 69 Most of the other species produce two, three, four, six, or even eight broods per annum, and in the commercial world are..distinguished as ‘bivoltins’, ‘trivoltins’, ‘quadrivoltins’, etc.
c. Something (denoted by the second element) having three of some characteristic part, or related to three things.
tri-car n.
Brit. /ˈtrʌɪkɑː/
,
U.S. /ˈtraɪˌkɑr/
a motor car with three wheels; a motor tricycle with a seat for a person or a carrier for luggage in front.
ΘΚΠ
society > travel > means of travel > a conveyance > vehicle > powered vehicle > motor car > [noun] > three-wheeled car
cyclecar1891
tri-car1903
tri-motor-car1905
1903 Motor 6 May 279/1 (heading) The new Rex ‘Tricar’.
1904 Sat. Rev. 20 Feb. 228/1 The development of the tri-car is especially important.
1904 Sat. Rev. 20 Feb. 228/1 There is a great future for the useful tri-car.
1906 Westm. Gaz. 21 Aug. 4/2 Experience is going to show that the final form of the tri-car for delivery purposes will be of a very different pattern.
triceptor n.
Brit. /(ˌ)trʌɪˈsɛptə/
,
U.S. /ˌtraɪˈsɛptər/
Physical Chemistry an intermediary body having three haptophorous groups.
ΘΚΠ
the world > life > biology > substance > process stimulators or inhibitors > antibody > [noun] > receptor
receptor1900
amboceptor1901
triceptor1902
uniceptor1902
chemoreceptor1907
chemoceptor1910
nutriceptor1911
1902 V. C. Vaughan & F. G. Novy Cellular Toxins (ed. 4) 132 The intermediary body [usually an] ‘amboceptor’,..may be a triceptor, quadriceptor, etc.
tricoaster n.
Brit. /(ˌ)trʌɪˈkəʊstə/
,
U.S. /ˌtraɪˈkoʊstər/
a combination of a three-speed gear with a ‘coaster’ brake on a cycle.
ΘΚΠ
society > travel > means of travel > a conveyance > vehicle > vehicle propelled by feet > [noun] > cycle > parts and equipment of cycles > gears
crypto-dynamic1883
crypto1886
tricoaster1908
derailleur gear1930
1908 Daily Chron. 21 Nov. 9/4 He made use of the Sturmey-Archer Tri~coaster, which is the three-speed gear in association with a foot-acted brake.
tri-machine n.
Brit. /ˈtrʌɪməʃiːn/
,
U.S. /ˈtraɪməˌʃin/
= tri-car n.
tri-mix n.
Brit. /ˈtrʌɪmɪks/
,
U.S. /ˈtraɪˌmɪks/
a breathing mixture for deep-sea divers composed of nitrogen, helium, and oxygen.
ΘΚΠ
the world > matter > gas > [noun] > specific gases > gas used in breathing apparatus
oxylithe1902
oxyhelium1966
tri-mix1976
1976 Jrnl. Appl. Physiol. 40 605/2 Each subject..breathed either air or a mixture of 36% helium, 21% oxygen, and 43% nitrogen (tri-mix) during cycles of immersed work.
1981 New Scientist 12 Feb. 390 Last week a team of divers..broke the world record for a simulated dive, experiencing pressures equivalent to those 686 metres beneath the sea surface... Part of the secret of the test's success was that the divers breathed a recently developed gas mixture, called trimix.
tri-mobile n.
Brit. /ˈtrʌɪmə(ʊ)biːl/
,
U.S. /ˈtraɪmoʊˌbil/
= tri-car n.
tri-motor-car n.
Brit. /(ˌ)trʌɪˈməʊtəkɑː/
,
U.S. /ˌtraɪˈmoʊdərˌkɑr/
= tri-car n.
ΘΚΠ
society > travel > means of travel > a conveyance > vehicle > powered vehicle > motor car > [noun] > three-wheeled car
cyclecar1891
tri-car1903
tri-motor-car1905
1905 Westm. Gaz. 28 Dec. 7/3 Returning home in a tri-motor-car.
† tri-pluˈrality n. Obsolete a plurality in which three benefices are held at once.
ΘΚΠ
society > faith > worship > benefice > [noun] > one who possesses > who has two or more > holding of three together
tri-plurality1425
trialitya1529
1425 Rolls of Parl. IV. 290/2 That mony a Parsone..have pluralite, and somme tripluralite.
tripyramid n.
Brit. /(ˌ)trʌɪˈpɪrəmɪd/
,
U.S. /ˌtraɪˈpɪrəˌmɪd/
Crystallography a triangular pyramid, as a form in certain calcareous spars. [After scientific Latin Tripyramides, genus name (1748 or earlier).]
ΘΚΠ
the world > matter > chemistry > crystallography (general) > crystal (general) > specific crystal forms > [noun]
tripyramid1828
trisoctahedron1837
fluoroid1850
sphenoid1855
discalenohedron1872
prism1878
tetrakis-hexahedron1878
galenoid1882
macroprism1883
semi-form1895
tetartohedron1895
tetrakisdodecahedron1895
trichite1900
1753 Chambers's Cycl. Suppl. Tripyramides,..the name of a genus of spars... The bodies of this genus are spars, composed of single pyramids, each of three sides,..affixed by their bases to some solid body.]
1828 N. Webster Amer. Dict. Eng. Lang. Tripyramid.
tri-schism n.
Brit. /ˈtrʌɪs(k)ɪz(ə)m/
,
U.S. /ˈtraɪˌʃɪz(ə)m/
,
/ˈtraɪˌs(k)ɪz(ə)m/
schism of three parties.Apparently an isolated use.
ΚΠ
1896 J. H. Wylie Hist. Eng. Henry IV III. 388 Instead of schism, tri-schism, which threatened to become centi-schism.
tri-spear n.
Brit. /ˈtrʌɪspɪə/
,
U.S. /ˈtraɪˌspɪ(ə)r/
a trident.Apparently an isolated use.
ΚΠ
1887 W. Morris tr. Homer Odyssey I. v. 92 His hand the tri-spear grasping.
3. In Chemical nomenclature, in the names of compounds and derivatives, with general sense ‘three’, ‘three times’.
a. Prefixed to names of compounds of elements, radicals, or groups, names of salts, etc., to signify three atoms, groups, or equivalents of these elements or radicals in combination with another element or radical. Also in names of some organic compounds, referring to their composition, as triamide n., triamine n., and the compound ethers or esters of glycerin with acids, as triacetin n., See also triacetate n., trisilicate n.In early nomenclature, tri- or tris- prefixed to the name of a salt meant 3 molecules not of the acid, but of the base; thus 3PbO.C4H5O3 was called tris- or tri-acetate of lead; similarly B3O was called trioxide of any element B.
tribromide n.
Brit. /(ˌ)trʌɪˈbrəʊmʌɪd/
,
U.S. /ˌtraɪˈbroʊˌmaɪd/
a compound of 3 atoms of bromine with another element or radical, as tribromide of boron.
ΘΚΠ
the world > matter > chemistry > elements and compounds > metals > specific elements > bromine > [noun] > compounds > miscellaneous others
oxybromide1849
tribromide1866
bromal1875
1866 H. E. Roscoe Lessons Elem. Chem. xvi. 142 Arsenic unites with chlorine, bromine, and iodine, to form arsenic trichloride, tribromide, and triiodide.
Categories »
tri-butyrin n.
Brit. /(ˌ)trʌɪˈbjuːtᵻrɪn/
,
U.S. /ˌtraɪˈbjudərən/
Categories »
tri-carbonate n.
Brit. /(ˌ)trʌɪˈkɑːbəneɪt/
,
/(ˌ)trʌɪˈkɑːbənət/
,
U.S. /ˌtraɪˈkɑrbəˌneɪt/
,
/ˌtraɪˈkɑrbənət/
Categories »
tri-chlorate n.
Brit. /(ˌ)trʌɪˈklɔːreɪt/
,
U.S. /ˌtraɪˈklɔˌreɪt/
Categories »
tri-chlorate n.
Brit. /(ˌ)trʌɪˈklɔːreɪt/
,
U.S. /ˌtraɪˈklɔˌreɪt/
trichloride n.
Brit. /(ˌ)trʌɪˈklɔːrʌɪd/
,
U.S. /ˌtraɪˈklɔˌraɪd/
ΘΚΠ
the world > matter > chemistry > elements and compounds > metals > specific elements > chlorine > [noun] > compounds > by number of chlorine atoms
dichloride1812
bichloride1823
trichloride1863
1863 H. Watts Dict. Chem. I. 895 The metals which form trichlorides are antimony, arsenic, bismuth, gold, molybdenum, tungsten and vanadium.
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tri-cyanate n.
Brit. /(ˌ)trʌɪˈsʌɪəneɪt/
,
U.S. /ˌtraɪˈsaɪəˌneɪt/
Categories »
tri-cyanide n.
Brit. /(ˌ)trʌɪˈsʌɪənʌɪd/
,
U.S. /ˌtraɪˈsaɪəˌnaɪd/
tri-fluoride n.
Brit. /(ˌ)trʌɪˈflʊərʌɪd/
,
/(ˌ)trʌɪˈflɔːrʌɪd/
,
U.S. /ˌtraɪˈflʊˌraɪd/
,
/ˌtraɪˈflɔˌraɪd/
ΚΠ
1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) 338 The gaseous trifluoride of boron, which contains no hydrogen.
1880 H. E. Roscoe & C. Schorlemmer Treat. Chem. II. ii. 319 Antimony Trifluoride, SbF3, is obtained as a dense snow-white mass, by distilling antimony with mercury fluoride.
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tri-hydrate n.
Brit. /(ˌ)trʌɪˈhʌɪdrət/
,
/(ˌ)trʌɪˈhʌɪdreɪt/
,
U.S. /ˌtraɪˈhaɪdrət/
,
/ˌtraɪˈhaɪˌdreɪt/
Categories »
tri-hydride n.
Brit. /(ˌ)trʌɪˈhʌɪdrʌɪd/
,
U.S. /ˌtraɪˈhaɪˌdraɪd/
Thesaurus »
Categories »
tri-iodide n.
Brit. /(ˌ)trʌɪˈʌɪədʌɪd/
,
U.S. /ˌtraɪˈaɪəˌdaɪd/
Categories »
tri-oxide n.
Brit. /(ˌ)trʌɪˈɒksʌɪd/
,
U.S. /ˌtraɪˈɑkˌsaɪd/
Categories »
tri-palmitin n.
Brit. /(ˌ)trʌɪˈpalmᵻtɪn/
,
/(ˌ)trʌɪˈpɑːmᵻtɪn/
,
U.S. /ˌtraɪˈpɑ(l)mədən/
tri-phosphate n.
Brit. /(ˌ)trʌɪˈfɒsfeɪt/
,
U.S. /ˌtraɪˈfɑsˌfeɪt/
ΘΚΠ
the world > matter > chemistry > chemical substances > salts > [noun] > salts named by atomic number > phosphates or phosphites > specific named
microcosmic salt1770
superphosphate1798
oxyphosphate1815
hypophosphite1818
thorina1818
tri-phosphate1823
bone phosphate1834
phosphate1849
triple phosphate1857
hypophosphate1864
trimethyl-phosphine1866
hexametaphosphate1891
trimetaphosphate1894
triose phosphate1934
1823 W. Henry Elements Exper. Chem. (ed. 9) I. ix. 567 Tri-phosphate of lime.
tri-stearin n.
Brit. /(ˌ)trʌɪˈstɪərɪn/
,
U.S. /ˌtraɪˈstɪrᵻn/
ΚΠ
1856 H. B. Jones & A. W. Hoffman Man. Elem. Chem. (ed. 6) 607 Three compounds of stearic acid with glycerin..which M. Berthelot distinguishes as monostearin, bistearin, and tristearin.
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trisulphate n.
Brit. /(ˌ)trʌɪˈsʌlfeɪt/
,
U.S. /ˌtraɪˈsəlˌfeɪt/
a compound of three SO4 groups with a metal or radical (or in earlier nomenclature of three SO3 groups with a basic oxide).
tri-sulphide n.
Brit. /(ˌ)trʌɪˈsʌlfʌɪd/
,
U.S. /ˌtraɪˈsəlˌfaɪd/
ΚΠ
1866 H. E. Roscoe Lessons Elem. Chem. xxiv. 207 Metallic antimony occurs native, but its chief ore is the trisulphide.
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tri-sulphuret n.
Brit. /(ˌ)trʌɪˈsʌlf(j)ᵿrɛt/
,
U.S. /ˌtraɪˈsəlf(j)əˌrɛt/
triterpane n.
Brit. /(ˌ)trʌɪˈtəːpeɪn/
,
U.S. /ˌtraɪˈtərˌpeɪn/
a terpane with the formula C30H60, analogous to the triterpenes.
ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > terpanes
menthane1902
terpane1902
triterpane1965
1965 Proc. National Acad. Sci. U.S.A. 54 1406 We wish to report now the isolation and identification of..a C30-pentacyclic triterpane from the branched~cyclic alkane fraction of the Green River Shale.
1981 Jrnl. Chromatogr. Sci. 19 156/1 This study deals with the apparent effect that maturation has on the relative concentration of individual triterpanes [etc.].
triterpene n.
Brit. /(ˌ)trʌɪˈtəːpiːn/
,
U.S. /ˌtraɪˈtərˌpin/
any of the group of terpenes of formula C30H48, found in plant gums and resins; also, a triterpenoid.
ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > terpenes > triterpenes
triterpene1902
triterpenoid1932
1902 F. J. Pond tr. F. Heusler Chem. Terpenes 432 Several well characterized compounds which occur in elemi-resin belong to the class of triterpenes.
1945 Chem. Abstr. 39 5887/1 Other isoprenoid hydrocarbons, as isoprene, diterpenes, triterpenes, sesquiterpenes, are either entered at their trivial names or named systematically.
1978 Nature 9 Feb. 495/1 Stevioside, a triterpene glycoside, which is readily extracted from the leaves of S. rebaudiana, is being produced on a commercial scale in Japan... Stevioside, which is approximately 300 times sweeter than sucrose, is not a permitted food additive elsewhere.
triterpenoid n.
Brit. /(ˌ)trʌɪˈtəːpənɔɪd/
,
U.S. /ˌtraɪˈtərpəˌnɔɪd/
a triterpene or a derivative of one.
ΘΚΠ
the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > terpenes > triterpenes
triterpene1902
triterpenoid1932
1932 Chem. Abstr. 26 3244 (heading) Contribution to the accurate determination of the empirical formulas of several triterpenes and triterpenoids.
1978 Nature 16 Mar. 217/1 Polycyclic triterpenoids are found in petroleum and their presence was at first taken as evidence of non-marine contribution, as they had been detected in the lipid extract of ferns.
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tri-thionate n.
Brit. /(ˌ)trʌɪˈθʌɪneɪt/
,
/(ˌ)trʌɪˈθʌɪnət/
,
U.S. /ˌtraɪˈθaɪəˌneɪt/
,
/ˌtraɪˈθaɪənət/
b.
(a) Prefixed to adjectives, or to nouns used attributively, in the names or descriptions of acids, alcohols, compound ethers or esters, oxides, salts, etc.; e.g. trisodic or trisodium, (a salt) containing 3 atoms of sodium; triethylic or triethyl (a compound) containing 3 ethyl groups; triethylene, containing three non-contiguous ethylene radicals in the molecule. So trihydric or trihydrogen, tricalcic or tricalcium, triargentic or tri-silver, tricarbon, trichloric, trimethylic or trimethyl, triplumbic, trithionic, triacetic, etc.
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic compounds > [adjective] > by constituent molecules
triethylic1866
organochlorine1961
phosphazene1961
ylidic1970
the world > matter > chemistry > organic chemistry > hydrocarbons > [adjective] > hydrocarbon radicals > others
toluylic1857
triethylene1866
tolylic1868
1866 W. Odling Lect. Animal Chem. 108 We meet with still less oxidised tricarbon molecules.
1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 346 A trisodic orthophosphate, sometimes called subphosphate.
1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 452 Triplumbic tetroxide, or Red lead.
1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xv. 154 The three atoms of hydrogen in trihydrogen phosphate may be replaced by three different metals.
1888 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) I. 99 Alcohols are classed as monohydric, dihydric, trihydric..according to the number of hydroxyl-groups which they contain.
1920 Jrnl. Chem. Soc. 117 1090 (heading) Triethylene tri- and tetra-sulphides.
1953 Arch. Internal Med. 92 629 The purpose of this communication is to present our preliminary experience in the treatment of..human leukemias..with triethylene thiophosphoramide (ThioTEPA).
1962 J. H. Burn Drugs, Med. & Man xix. 193 Tri-ethylene melamine..is used in the textile industry... It is now widely used in the treatment of Hodgkin's disease.
(b)
trihydroxy adj.
Brit. /ˌtrʌɪhʌɪˈdrɒksi/
,
U.S. /ˌtraɪhaɪˈdrɑksi/
containing three hydroxyl groups.
ΘΚΠ
the world > matter > chemistry > organic chemistry > organic groups > [adjective] > hydroxyl groups > containing 3 hydroxyl groups
triatomic1862
trihydric1866
trihydroxy1895
1895 Jrnl. Chem. Soc. 68 i. 126 Two isomeric trihydroxy-acids are formed by the oxidation of ricinoleïc acid with potassium permanganate.
1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. i. xvii. 626 On gentle heating the hydrogen or the boron is substituted to give B-trihydroxy, B-trimethoxy, or B-trihalogenoborazines.
c. Prefixed to the names of elements or radicals, or their combining forms (as azo-, bromo-, chloro-, hydro-, hydroxy-, iodo-, nitro-, oxy-, sulpho-, thio-: see these) entering into the name of a compound, to signify that three atoms or groups of the element or radical are present, or are substituted for hydrogen, in the substance designated by the rest of the name. Combinations of this kind are formed when wanted, and are unlimited in number: only a few are mentioned in this work: see tribromo- comb. form, trichloro- comb. form, etc.
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tribromhydrin n.
Brit. /ˌtrʌɪbrəʊmˈhʌɪdrɪn/
,
U.S. /ˌtraɪbroʊmˈhaɪdrən/
Categories »
tribromobenzene n.
Brit. /trʌɪˌbrəʊməʊˈbɛnziːn/
,
/trʌɪˌbrəʊməʊbɛnˈziːn/
,
U.S. /traɪˌbroʊmoʊˈbɛnˌzin/
,
/traɪˌbroʊmoʊˌbɛnˈzin/
C6H3Br3, in which three of the hydrogen atoms of benzene, C6H6, are replaced by three bromine atoms.
tributyl phosphate n.
Brit. /trʌɪˌbjuːtl ˈfɒsfeɪt/
,
U.S. /traɪˌbjud(ə)l ˈfɑsˌfeɪt/
an oily liquid, (C4H9O)3PO, that is a solvent used as a plasticizer and in the solvent-extraction of nuclear fuels.
ΘΚΠ
the world > matter > chemistry > chemical substances > esters > [noun] > named > phosphate esters
tricresyl phosphate1882
sucrose phosphate1910
tributyl phosphate1930
1930 Brit. Patent 330,228 1/2 The excess of alcohol and later the tributyl phosphate are distilled off in vacuo.
1957 Financial Times Ann. Rev. Brit. Industry 69/1 The concentrate is dissolved in nitric acid..where it is extracted with tributyl phosphate, producing uranium.
Categories »
trichlorhydrin n.
Brit. /ˌtrʌɪklɔːˈhʌɪdrɪn/
,
U.S. /ˌtraɪklɔrˈhaɪdrən/
C3H5Cl3.
tricresyl phosphate n.
Brit. /trʌɪˌkrɛs(ᵻ)l ˈfɒsfeɪt/
,
U.S. /traɪˌkrɛs(ə)l ˈfɑsˌfeɪt/
[cresyl n.] a colourless liquid, (CH3C6H4O)3PO, used as a fuel additive, plasticizer, and fire retardant.
ΘΚΠ
the world > matter > chemistry > chemical substances > esters > [noun] > named > phosphate esters
tricresyl phosphate1882
sucrose phosphate1910
tributyl phosphate1930
1882 Jrnl. Chem. Soc. 42 839 The authors have thus obtained triphenyl, tri-β-naphthyl and tricresyl phosphate from the corresponding phenols.
1959 Economist 10 Jan. 153 (advt.) The Ignition Control Additive based on tricresyl phosphate..was developed..to overcome serious problems of power loss and rough running.
1962 Punch 15 Aug. 218/3 Tricresyl phosphate was a chemical similar to triorthocresyl phosphate.
triethanolamine n.
Brit. /ˌtrʌɪɛθəˈnɒləmiːn/
,
U.S. /ˌtraɪˌɛθəˈnɑləˌmin/
[ethanolamine n.] an oily alkaline liquid alcohol, (HOCH2CH2)3N, used as a solvent and a stabilizer.
ΘΚΠ
the world > matter > chemistry > organic chemistry > amines > [noun] > named
ethylamine1849
amylamine1850
ethylia1850
petinine1850
triethylamine1850
polyamine1861
nonylamine1866
octylamine1866
carbylamine1868
tetrylamine1868
hydroxylamine1871
hydramine1877
nitrosamine1878
guanamine1881
hexamethylenetetramine1888
morpholine1889
triethanolamine1897
tropane1898
agmatine1910
tyramine1910
histamine1912
spermidine1927
monoethanolamine1929
tryptamine1929
octopamine1948
norsynephrine1952
tilorone1970
1897 Jrnl. Chem. Soc. 72 314 (heading) Triethanolamine (trihydroxytriethylamine).
1939 Jrnl. Royal Aeronaut. Soc. 43 617 Strips of brass sheet were..immersed respectively in pure glycol, commercial glycol and commercial glycol treated with triethanolamine phosphate.
1976 New Yorker 8 Mar. 67/1 (advt.) Its mild ‘heavy-molecular’ triethanolamine-base formulation is chemically balanced to remove surface dirt and makeup without penetrating and robbing the sub~layers of the skin.
Categories »
triethylcarbinol n.
Brit. /trʌɪˌiːθʌɪlˈkɑːbᵻnɒl/
,
/trʌɪˌɛθʌɪlˈkɑːbᵻnɒl/
,
/trʌɪˌɛθ(ᵻ)lˈkɑːbᵻnɒl/
,
U.S. /traɪˌɛθ(ə)lˈkɑrbəˌnɔl/
,
/traɪˌɛθ(ə)lˈkɑrbəˌnɑl/
C(C2H5)3OH.
trihydrocalcite n.
Brit. /ˌtrʌɪhʌɪdrə(ʊ)ˈkalsʌɪt/
,
U.S. /ˌtraɪhaɪdroʊˈkælˌsaɪt/
[ < Russian trigidrokal′tsit″ (P. N. Chirvinsky 1906, in Ezhegodnik″ po Geol. i Mineral. Rosīi VIII. 241/1)] Mineralogy a trihydrate of calcium carbonate, CaCO3.3H2O, the natural occurrence of which is uncertain.
ΘΚΠ
the world > the earth > minerals > types of mineral > carbonates > [noun] > hydrated calcium carbonate
pentahydrocalcite1910
trihydrocalcite1910
scawtite1929
1910 Mineral. Mag. 15 432 Tri~hydrocalcite... Hydrated calcium carbonate, CaCO3.3H2O, occurring as a mould-like encrustation on chalk~marl near Nova-Alexandria.
1928 Ann. Rep. Progr. Chem. 24 308 The minerals hydroconite, hydrocalcite (trihydrocalcite, pentahydrocalcite), and lublinite periodically come to be regarded as doubtful minerals, because when re-examined on museum material they are found to be merely calcite.
triiodothyronine n.
Brit. /ˌtrʌɪʌɪəʊdəʊˈθʌɪrəniːn/
,
U.S. /ˌtraɪaɪˌoʊdoʊˈθaɪrəˌnin/
[thyronine n.] Biochemistry a thyroid hormone similar to thyroxine (tetraiodothyronine) but having greater potency; HO·C6H3I·O·C6H2I2·CH2CH(NH2)COOH.
ΚΠ
1952 Lancet 1 Mar. 439/1 (heading) The identification of 3:5:3′-L-triiodothyronine in human plasma.
1975 Jrnl. Endocrinol. 64 573 In the present culture system the thyroid hormones (tri-iodothyronine and thyroxine) inhibited the action of PTH.
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trimethylamine n.
Brit. /ˌtrʌɪmᵻˈθʌɪləmiːn/
,
/trʌɪˌmiːθʌɪlˈeɪmiːn/
,
/(ˌ)trʌɪˈmɛθᵻləmiːn/
,
U.S. /ˌtraɪˈmɛθələˌmin/
,
/traɪˌmɛθələˈmin/
N(CH3)3.
Categories »
trimethylbenzene n.
Brit. /trʌɪˌmiːθʌɪlˈbɛnziːn/
,
/trʌɪˌmiːθʌɪlbɛnˈziːn/
,
/trʌɪˌmɛθʌɪlˈbɛnziːn/
,
/trʌɪˌmɛθʌɪlbɛnˈziːn/
,
/trʌɪˌmɛθ(ᵻ)lˈbɛnziːn/
,
/trʌɪˌmɛθ(ᵻ)lbɛnˈziːn/
,
U.S. /traɪˌmɛθ(ə)lˈbɛnˌzin/
,
/traɪˌmɛθ(ə)lˌbɛnˈzin/
C6H3(CH3)3.
† tripotassamide n. Obsolete potassium nitride, K3N, a highly unstable compound that is not obtainable in a pure state, always containing significant amounts of potassium and potassium hydroxide.
ΚΠ
1866 H. Watts Dict. Chem. IV. 695 Tripotassamide or Nitride of Potassium, K3N,..is a greenish-black infusible substance.
d. In verbs and their participles derived from nouns.
Categories »
tribrominated adj.
Brit. /(ˌ)trʌɪˈbrəʊmᵻneɪtᵻd/
,
U.S. /ˌtraɪˈbroʊməˌneɪdᵻd/
= trichlorinated adj.
trichlorinated adj.
Brit. /(ˌ)trʌɪˈklɔːrᵻneɪtᵻd/
,
/(ˌ)trʌɪˈklɒrᵻneɪtᵻd/
,
U.S. /ˌtraɪˈklɔrəˌneɪdᵻd/
in which three hydrogen atoms have been replaced by atoms of bromine or chlorine.
ΘΚΠ
the world > matter > chemistry > elements and compounds > metals > specific elements > chlorine > [adjective] > combined or replaced with
chlorinated1856
perchlorated1857
trichlorinated1857
1857 W. A. Miller Elements Chem. III. 47 Trichlorinated Dutch Liquid.
trihydrated adj.
Brit. /(ˌ)trʌɪˈhʌɪdreɪtᵻd/
,
/ˌtrʌɪhʌɪˈdreɪtᵻd/
,
U.S. /ˌtraɪˈhaɪˌdreɪdᵻd/
containing three molecules of water.
ΘΚΠ
the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to named chemical reactions or processes > having undergone hydration > containing specific number of molecules of water
monohydrated1850
pentahydrated1851
trihydrated1868
hexahydrated1880
1868 H. Watts Dict. Chem. IV. 83 Nitrates..Copper also forms a trihydrated salt, Cu″N2O6.3H2O.
4. Forming verbs (and derivatives), as trifallow v., trisect adj., trisection n.

Draft additions 1993

tricolpate adj.
Brit. /(ˌ)trʌɪˈkɒlpeɪt/
,
U.S. /ˌtraɪˈkɑlˌpeɪt/
[Greek κόλπος fold] Botany of pollen grains: having three furrows.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having pollen
ambrosial1759
pollen-bearinga1794
polliniferous1800
pollinary1849
pollened1871
tricolpate1928
1928 R. P. Wodehouse in Ann. Bot. 42 901 This character, viz. the possession of three longitudinal expansion folds, I have described as tricolpate.
1961 A. J. Eames Morphol. Angiosperms v. 162 The tricolpate grain, with three meridional furrows, is apparently the basic type in dicotyledons.
1989 Nature 9 Nov. 131/2 The four higher dicot subclasses all have multi-aperturate pollen ultimately derived from the distinctive tricolpate type.

Draft additions 1993

tri-D adj.
Brit. /(ˌ)trʌɪˈdiː/
,
U.S. /ˌtraɪˈdi/
(also tri-ˈdi) = tri-dimensional adj.; with capital initial, a proprietary name in the U.S. for a range of computer equipment; cf. three-D adj. at three adj. and n. Compounds 3b.
ΘΚΠ
the world > space > extension in space > measurable spatial extent > [adjective] > of three dimensions
tri-dimensional1858
three-dimensional1878
three-D1955
tri-D1955
society > computing and information technology > hardware > peripherals > [noun] > proprietary brand
tri-D1955
Centronics1973
1955 F. Pohl in Galaxy Sci. Fiction Apr. 77/2 Marin was already setting up his co-ordinates... ‘I have the time now... But the tri-di readings are hard.’
1979 D. Adams Hitch Hiker's Guide to Galaxy iv. 35 They watched his every gesture through the eyes of a small robot tri-D camera.
1981 J. May Many-Colored Land i. xiii. 78 The screen went from black to living Tri-D color in an orbiter's view of Pliocene Earth, six million years..backward in time.
1989 Official Gaz. (U.S. Patent Office) 1 Aug. tm51/2 Tri-D... For computers, computer peripherals and parts therefor... First use 10-31-1988; in commerce 10-31-1988.

Draft additions 1993

triacylglycerol n.
Brit. /ˌtrʌɪeɪsʌɪlˈɡlɪsərɒl/
,
/ˌtrʌɪasɪlˈɡlɪsərɒl/
,
U.S. /ˌtraɪæs(ə)lˈɡlɪsəˌrɔl/
,
/ˌtraɪæs(ə)lˈɡlɪsəˌrɑl/
= triglyceride n.
ΘΚΠ
the world > matter > chemistry > organic chemistry > alcohols > [noun] > trihydric alcohols > derivatives
glycerule1840
glyceryl1845
triolein1855
tripalmitin1855
triacetin1856
triglyceride1860
glyceride1864
triacylglycerol1966
1966 Lipids I. Index 467 Triacylglycerol.
1967 Information Bull. Internat. Union Pure & Appl. Chem. 30 23 The terms triacylglycerol, diacylglycerol are preferred for neutral fats, not only for consistency, but mainly because strict interpretation of the traditional (optional) terms triglyceride, diglyceride does not convey the intended meaning.
1988 P. W. Kuchel et al. Schaum's Outl. Theory & Probl. Biochem. xiii. 359 Fatty acids are important cellular fuels and are stored as triacylglycerols in adipose tissue.

Draft additions 1993

trihalomethane n.
Brit. /ˌtrʌɪhalə(ʊ)ˈmiːθeɪn/
,
U.S. /ˌtraɪˌhæloʊˈmɛˌθeɪn/
[halo- comb. form2] any of the compounds formed by the substitution of halogen atoms for three of the hydrogen atoms of methane.
ΘΚΠ
the world > matter > chemistry > elements and compounds > hydrogen > [noun] > compounds > sulphuretted > formed by substitution of halogen atoms
trihalomethane1968
1968 Chem. Abstr. 68 744/1 The abs. intensity, A, of the ir [sc. infrared] absorption band corresponding to the vibration ν-(CH) of the trihalomethanes has been related to the electronegativity of the halogen groups and to the charge σ of the C atom.
1975 Jrnl. Amer. Water Works Assoc. 67 644/3 The four trihalomethanes were not found or were present in low concentrations in the raw waters tested.
1989 What Food? Sept. 7/2 Trihalomethanes (THMs)..are formed when untreated water containing organic matter is disinfected with chlorine.

Draft additions December 2016

tri-fin n. and adj.
Brit. /ˈtrʌɪfɪn/
,
U.S. /ˈtraɪˌfɪn/
Surfing and Windsurfing (a) n. a surfboard or sailboard with three fins (fin n.1 Additions); (b) adj. (of a surfboard or sailboard) having three fins.
ΚΠ
1971 Surfer Aug. 46 The tri-fin..has single-fin drive and twin-fin torque.
1972 Press-Telegram (Long Beach, Calif.) 28 Apr. c5/7 (advt.) Surfboards. Tri-fin $40. Twin-fin $10.
2009 Cornish Guardian (Nexis) 16 Sept. 4 Four surfboards stolen. The boards are a Rusty, 5ft 10in tri fin surfboard, a Rusty 6ft 1in tri fin board [etc.].
2014 Sydney Morning Herald (Nexis) 7 Jan. 30 Fins keep surfboards in the wave face but the Thruster, or tri-fin, may have had the greatest effect on surfing dynamics.
This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022).
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