trito-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Forms: before a vowel trit-.

Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin trito-; Greek τριτο-.

Etymology: < scientific Latin trito- (in e.g. tritovum tritovum n. at sense 1), and its etymon ancient Greek τριτο-, combining form (in e.g. τριτόσπορος sown for the third time) of τρίτος third ( < the same Indo-European base as third adj.); compare -o- connective. Compare proto- comb. form, deutero- comb. form, deuto- comb. form.Compare French trito-.

combining form representing Greek τρίτος third, occurring in several technical, mostly scientific, terms (usually corresponding to terms in proto- comb. form, and deutero- comb. form or deuto- comb. form).

1. Generally.

tritanomaly n.

Brit.

/ˌtrɪtəˈnɒməli/

/ˌtrɪtəˈnɒml̩i/

/ˌtrʌɪtəˈnɒməli/

/ˌtrʌɪtəˈnɒml̩i/

U.S.

/ˌtraɪdəˈnɑməli/

Ophthalm. a rare form of anomalous trichromatism marked by a reduced sensitivity to blue.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of eye > disordered vision > [noun] > colour blindness

Daltonism1841

xanthopsia1842

colour blindness1844

chromatopsia1848

achromatopsia1849

chromatometablepsy1849

chromatopseudopsy1849

acritochromacy1855

dichromatism1859

blue-blindness1868

green-blindness1868

red-blindness1868

chromatopsy1879

red vision1880

dyschromatopsia1890

xanthocyanopy1890

xanthocyanopsy1891

dichromacy1892

monochromatism1893

violet-blindness1894

monochromacy1900

deuteranopia1901

protanopia1902

tritanopia1915

deuteranomaly1932

protanomaly1932

tritanomaly1943

1943 Jrnl. Optical Soc. Amer. 33 574/2 These plates are invalid for the detection of tritanomaly.

1956 Jrnl. Optical Soc. Amer. 46 1075/1 Tritanomaly, discovered by Engelking, seems to be very rare.

1965 New Scientist 14 Oct. 134/3 Tritanopic defects are described as autosomal dominant while tritanomaly is considered to be more or less recessive sex-linked.

tritanomalous adj.

Brit.

/ˌtrɪtəˈnɒmələs/

/ˌtrɪtəˈnɒml̩əs/

/ˌtrʌɪtəˈnɒmələs/

/ˌtrʌɪtəˈnɒml̩əs/

U.S.

/ˌtraɪdəˈnɑmələs/

having tritanomaly.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of eye > disordered vision > [adjective] > colour blind

dichromic1836

dichromatic1842

colour-blind1847

green-blind1868

red-blind1873

blue-blind1877

red–green1878

achromatopsic1883

dyschromatoptic1886

colour-weak1893

violet-blind1894

monochromatic1897

protanopic1898

protanomalous1911

tritanopic1915

deuteranomalous1932

tritanomalous1943

colour-defective1958

protan1961

1943 Jrnl. Optical Soc. Amer. 33 572/1 These [subjects] are diagnosed by most other tests as tritanomalous or blue-yellow blind.

1946 W. D. Wright Res. Normal & Defective Colour Vision xxiv. 297 The tritanomalous observer has poor hue discrimination in the blue-green wavelengths.

tritencephalon n.

Brit.

/ˌtrɪtɛnˈsɛfəlɒn/

/ˌtrɪtɛnˈsɛfl̩ɒn/

/ˌtrʌɪtɛnˈsɛfəlɒn/

/ˌtrʌɪtɛnˈsɛfl̩ɒn/

U.S.

/ˌtraɪdɛnˈsɛfəl(ə)n/

the third of the three primary cerebral vesicles of the embryo; also, the hindmost segment of the brain of an insect. [ < scientific Latin tritencephalon (1882 or earlier) < trito- trito- comb. form + ancient Greek ἐγκέϕαλος brain (see encephalo- comb. form).]

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > skull or brain

visceral cleft1870

metencephalon1871

chondrocranium1875

protocerebrum1885

protencephalon1887

parachordal1892

tritencephalon1910

parencephalon1911

the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > compound brain > hindmost segment of

tritocerebrum1898

tritencephalon1910

1910 Encycl. Brit. XIII. 425/2 This anterior or ‘brain’ mass consists of three lobes (the prot-, deut-, and tritencephalon of Viallanes).

tritocere n.

Brit.

/ˈtrɪtə(ʊ)sɪə/

/ˈtrʌɪtə(ʊ)sɪə/

U.S.

/ˈtraɪdəˌsɪ(ə)r/

that tine of a deer's antler which is third in order of development ( Cent. Dict. 1891). [ < trito- comb. form + ancient Greek κέρας horn (see kerato- comb. form).]

tritocerebrum n.

Brit.

/ˌtrɪtə(ʊ)sᵻˈriːbr(ə)m/

/ˌtrɪtə(ʊ)ˈsɛrᵻbr(ə)m/

/ˌtrʌɪtə(ʊ)sᵻˈriːbr(ə)m/

/ˌtrʌɪtə(ʊ)ˈsɛrᵻbr(ə)m/

U.S.

/ˌtraɪdoʊsəˈribrəm/

/ˌtraɪdoʊˈsɛrəbrəm/

(erroneoustritocerebron) = tritencephalon n. [ < scientific Latin tritocerebron (Viallanes, 1884) < trito- trito- comb. form + classical Latin cerebrum brain (see cerebrum n.).]

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > compound brain > hindmost segment of

tritocerebrum1898

tritencephalon1910

1898 A. S. Packard Text-bk. Entomol. 231 Viallanes first..divided the brain of adult insects into three regions or segments; i.e. the ‘protocerebron’, ‘deutocerebron’, and ‘tritocerebron’.

1898 A. S. Packard Text-bk. Entomol. 237 The œsophageal lobes (Tritocerebrum).

tritocerebral adj.

Brit.

/ˌtrɪtə(ʊ)sᵻˈriːbr(ə)l/

/ˌtrɪtə(ʊ)ˈsɛrᵻbr(ə)l/

/ˌtrʌɪtə(ʊ)sᵻˈriːbr(ə)l/

/ˌtrʌɪtə(ʊ)ˈsɛrᵻbr(ə)l/

U.S.

/ˌtraɪdoʊsəˈribrəl/

/ˌtraɪdoʊˈsɛrəbrəl/

pertaining to or constituting a tritocerebrum.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [adjective] > relating to tritocerebrum

tritocerebral1910

1910 Encycl. Brit. XIII. 418/2 An ‘intercalary’ or tritocerebral segment has been demonstrated..in various insect embryos.

tritocone n.

Brit.

/ˈtrɪtə(ʊ)kəʊn/

/ˈtrʌɪtə(ʊ)kəʊn/

U.S.

/ˈtraɪdəˌkoʊn/

the posterior external cusp of a premolar tooth.

ΘΚΠ

the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [noun] > crown and parts

mensa1684

crown1733

cusp1849

face1872

hypocone1888

hypoconid1888

tritocone1896

hypoconulid1897

talon1898

1896 Proc. Zool. Soc. 5 May 563 (Premolars) The antero-external cusp (protocone of Scott)..develops first, the antero-internal or deuterocone second, and the tetartocone third, the tritocone being wanting.

trito-Isaiah n.

Brit.

/ˌtrɪtəʊʌɪˈzʌɪə/

/ˌtrʌɪtəʊʌɪˈzʌɪə/

U.S.

/ˌtraɪdoʊaɪˈzeɪə/

/ˌtraɪdoʊaɪˈzaɪə/

a later author to whom a third section of the book of Isaiah is attributed by some critics. [After Deutero-Isaiah n. at deutero- comb. form .]

ΘΚΠ

society > faith > aspects of faith > Bible, Scripture > Testament > Old Testament > divisions of Old Testament > [noun] > Isaiah > author of

evangelical prophet1547

evangelic prophet1683

Deutero-Isaiah1844

Second Isaiah1881

trito-Isaiah1908

1908 Athenæum 7 Nov. 565/2 A Trito-Isaiah besides a Deutero-Isaiah.

tritomesal adj.

Brit.

/ˌtrɪtə(ʊ)ˈmɛsl/

/ˌtrʌɪtə(ʊ)ˈmɛsl/

/ˌtrɪtə(ʊ)ˈmiːsl/

/ˌtrʌɪtə(ʊ)ˈmiːsl/

U.S.

/ˌtraɪdoʊˈmɛs(ə)l/

applied to a series of cells in the wings of hymenopterous insects, now usually called the submedian second discoidal and first apical cells.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Hymenoptera > [adjective] > of series of cells in wing

tritomesal1826

1826 W. Kirby & W. Spence Introd. Entomol. III. xxxv. 632 The medial areolets..form three distinct series; these may be called the protomesal, deuteromesal, and tritomesal.

tritotoxin n.

Brit.

/ˌtrɪtə(ʊ)ˈtɒksɪn/

/ˌtrʌɪtə(ʊ)ˈtɒksɪn/

U.S.

/ˌtraɪdoʊˈtɑks(ə)n/

see quot. 1904 at prototoxin n. 1).

tritovertebra n.

Brit.

/ˌtrɪtə(ʊ)ˈvəːtᵻbrə/

/ˌtrʌɪtə(ʊ)ˈvəːtᵻbrə/

U.S.

/ˌtraɪdoʊˈvərdəbrə/

in Carus's nomenclature (1828), applied to the bones of the limbs reckoned as the third set of vertebræ. [After French tritovertèbre (1835 or earlier), itself after German Tertiarwirbel (1828).]

ΘΚΠ

the world > life > the body > structural parts > bone or bones > bones of arm or leg > [noun]

focilea1400

tritovertebrac1860

c1860 S. Kneeland, Jr. in Amer. Cycl. XIII. 424 (Cent. Dict.) [Carus] makes what he calls proto-, deuto-, and trito-vertebræ.

tritovertebral adj.

Brit.

/ˌtrɪtə(ʊ)ˈvəːtᵻbr(ə)l/

/ˌtrʌɪtə(ʊ)ˈvəːtᵻbr(ə)l/

U.S.

/ˌtraɪdoʊˈvərdəbrəl/

/ˌtraɪdoʊˌvərˈtibrəl/

pertaining to or of the nature of a tritovertebra. [Compare French tritovertébral (1835 or earlier).]

ΘΚΠ

the world > life > the body > structural parts > bone or bones > bones of arm or leg > [adjective]

tritovertebralc1904

c1904 Encycl. Dict. Suppl. Tritovertebral.

tritovum n.

Brit.

/trʌɪˈtəʊvəm/

/trᵻˈtəʊvəm/

U.S.

/traɪˈtoʊv(ə)m/

a third stage of an ovum, succeeding the deutovum. [ < scientific Latin tritovum (Claparède, 1868) < trito- trito- comb. form + ovum ovum n.]

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > stage of ovum

tritovum1877

1877 T. H. Huxley Man. Anat. Invertebrated Animals vii. 385 In the Acarus of the Mouse, Claparède observed that the deutovum stage is followed by a tritovum.

tritozooid n.

Brit.

/ˌtrɪtə(ʊ)ˈzuːɔɪd/

/ˌtrɪtə(ʊ)ˈzəʊɔɪd/

/ˌtrʌɪtə(ʊ)ˈzuːɔɪd/

/ˌtrʌɪtə(ʊ)ˈzəʊɔɪd/

U.S.

/ˌtraɪdoʊˈzoʊˌɔɪd/

/ˌtraɪdoʊˈzuˌɔɪd/

a tertiary zooid, produced from a deuterozooid.

ΘΚΠ

the world > animals > invertebrates > colony or compound organism > [noun] > polyp or zooid of colony > tertiary zooid

tritozooid1861

1861 J. R. Greene Man. Animal Kingdom II. 74 The medusoids budded by Sarsia are, probably, tritozoöids.

†2. In Chemistry, formerly used, after T. Thomson ( Syst. Chem. (1804) I. 103), in naming the third oxide, sulphuret, iodide, etc. in a series in ascending order (cf. proto- comb. form 3a, deuto- comb. form 1). Obsolete.

ΚΠ

1806 R. Patterson Adams's Lect. Nat. & Exper. Philos. (rev. ed.) I. App. 538 Minium, the tritoxide of lead.

1812 H. Davy Elements Chem. Philos. 369 The dark brown oxide [of manganese]..must be a tritoxide or an oxide containing three proportions of oxygene.

1825 T. Thomson Attempt to Establish First Princ. Chem. II. 481 Tritosulphuret of potassium.

1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) xi. 371 In certain states of disease, a peculiar compound, called by Mulder the tritoxide of proteine, makes its appearance.

This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022).

单词	trito-
释义	trito-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Forms: before a vowel trit-. Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin trito-; Greek τριτο-. Etymology: < scientific Latin trito- (in e.g. tritovum tritovum n. at sense 1), and its etymon ancient Greek τριτο-, combining form (in e.g. τριτόσπορος sown for the third time) of τρίτος third ( < the same Indo-European base as third adj.); compare -o- connective. Compare proto- comb. form, deutero- comb. form, deuto- comb. form.Compare French trito-. combining form representing Greek τρίτος third, occurring in several technical, mostly scientific, terms (usually corresponding to terms in proto- comb. form, and deutero- comb. form or deuto- comb. form). 1. Generally. tritanomaly n. Brit. /ˌtrɪtəˈnɒməli/ , /ˌtrɪtəˈnɒml̩i/ , /ˌtrʌɪtəˈnɒməli/ , /ˌtrʌɪtəˈnɒml̩i/ , U.S. /ˌtraɪdəˈnɑməli/ Ophthalm. a rare form of anomalous trichromatism marked by a reduced sensitivity to blue. ΘΚΠ the world > health and disease > ill health > a disease > disorders of eye > disordered vision > [noun] > colour blindness Daltonism1841 xanthopsia1842 colour blindness1844 chromatopsia1848 achromatopsia1849 chromatometablepsy1849 chromatopseudopsy1849 acritochromacy1855 dichromatism1859 blue-blindness1868 green-blindness1868 red-blindness1868 chromatopsy1879 red vision1880 dyschromatopsia1890 xanthocyanopy1890 xanthocyanopsy1891 dichromacy1892 monochromatism1893 violet-blindness1894 monochromacy1900 deuteranopia1901 protanopia1902 tritanopia1915 deuteranomaly1932 protanomaly1932 tritanomaly1943 1943 Jrnl. Optical Soc. Amer. 33 574/2 These plates are invalid for the detection of tritanomaly. 1956 Jrnl. Optical Soc. Amer. 46 1075/1 Tritanomaly, discovered by Engelking, seems to be very rare. 1965 New Scientist 14 Oct. 134/3 Tritanopic defects are described as autosomal dominant while tritanomaly is considered to be more or less recessive sex-linked. tritanomalous adj. Brit. /ˌtrɪtəˈnɒmələs/ , /ˌtrɪtəˈnɒml̩əs/ , /ˌtrʌɪtəˈnɒmələs/ , /ˌtrʌɪtəˈnɒml̩əs/ , U.S. /ˌtraɪdəˈnɑmələs/ having tritanomaly. ΘΚΠ the world > health and disease > ill health > a disease > disorders of eye > disordered vision > [adjective] > colour blind dichromic1836 dichromatic1842 colour-blind1847 green-blind1868 red-blind1873 blue-blind1877 red–green1878 achromatopsic1883 dyschromatoptic1886 colour-weak1893 violet-blind1894 monochromatic1897 protanopic1898 protanomalous1911 tritanopic1915 deuteranomalous1932 tritanomalous1943 colour-defective1958 protan1961 1943 Jrnl. Optical Soc. Amer. 33 572/1 These [subjects] are diagnosed by most other tests as tritanomalous or blue-yellow blind. 1946 W. D. Wright Res. Normal & Defective Colour Vision xxiv. 297 The tritanomalous observer has poor hue discrimination in the blue-green wavelengths. tritencephalon n. Brit. /ˌtrɪtɛnˈsɛfəlɒn/ , /ˌtrɪtɛnˈsɛfl̩ɒn/ , /ˌtrʌɪtɛnˈsɛfəlɒn/ , /ˌtrʌɪtɛnˈsɛfl̩ɒn/ , U.S. /ˌtraɪdɛnˈsɛfəl(ə)n/ the third of the three primary cerebral vesicles of the embryo; also, the hindmost segment of the brain of an insect. [ < scientific Latin tritencephalon (1882 or earlier) < trito- trito- comb. form + ancient Greek ἐγκέϕαλος brain (see encephalo- comb. form).] ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > skull or brain visceral cleft1870 metencephalon1871 chondrocranium1875 protocerebrum1885 protencephalon1887 parachordal1892 tritencephalon1910 parencephalon1911 the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > compound brain > hindmost segment of tritocerebrum1898 tritencephalon1910 1910 Encycl. Brit. XIII. 425/2 This anterior or ‘brain’ mass consists of three lobes (the prot-, deut-, and tritencephalon of Viallanes). tritocere n. Brit. /ˈtrɪtə(ʊ)sɪə/ , /ˈtrʌɪtə(ʊ)sɪə/ , U.S. /ˈtraɪdəˌsɪ(ə)r/ that tine of a deer's antler which is third in order of development ( Cent. Dict. 1891). [ < trito- comb. form + ancient Greek κέρας horn (see kerato- comb. form).] tritocerebrum n. Brit. /ˌtrɪtə(ʊ)sᵻˈriːbr(ə)m/ , /ˌtrɪtə(ʊ)ˈsɛrᵻbr(ə)m/ , /ˌtrʌɪtə(ʊ)sᵻˈriːbr(ə)m/ , /ˌtrʌɪtə(ʊ)ˈsɛrᵻbr(ə)m/ , U.S. /ˌtraɪdoʊsəˈribrəm/ , /ˌtraɪdoʊˈsɛrəbrəm/ (erroneoustritocerebron) = tritencephalon n. [ < scientific Latin tritocerebron (Viallanes, 1884) < trito- trito- comb. form + classical Latin cerebrum brain (see cerebrum n.).] ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > compound brain > hindmost segment of tritocerebrum1898 tritencephalon1910 1898 A. S. Packard Text-bk. Entomol. 231 Viallanes first..divided the brain of adult insects into three regions or segments; i.e. the ‘protocerebron’, ‘deutocerebron’, and ‘tritocerebron’. 1898 A. S. Packard Text-bk. Entomol. 237 The œsophageal lobes (Tritocerebrum). tritocerebral adj. Brit. /ˌtrɪtə(ʊ)sᵻˈriːbr(ə)l/ , /ˌtrɪtə(ʊ)ˈsɛrᵻbr(ə)l/ , /ˌtrʌɪtə(ʊ)sᵻˈriːbr(ə)l/ , /ˌtrʌɪtə(ʊ)ˈsɛrᵻbr(ə)l/ , U.S. /ˌtraɪdoʊsəˈribrəl/ , /ˌtraɪdoʊˈsɛrəbrəl/ pertaining to or constituting a tritocerebrum. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [adjective] > relating to tritocerebrum tritocerebral1910 1910 Encycl. Brit. XIII. 418/2 An ‘intercalary’ or tritocerebral segment has been demonstrated..in various insect embryos. tritocone n. Brit. /ˈtrɪtə(ʊ)kəʊn/ , /ˈtrʌɪtə(ʊ)kəʊn/ , U.S. /ˈtraɪdəˌkoʊn/ the posterior external cusp of a premolar tooth. ΘΚΠ the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [noun] > crown and parts mensa1684 crown1733 cusp1849 face1872 hypocone1888 hypoconid1888 tritocone1896 hypoconulid1897 talon1898 1896 Proc. Zool. Soc. 5 May 563 (Premolars) The antero-external cusp (protocone of Scott)..develops first, the antero-internal or deuterocone second, and the tetartocone third, the tritocone being wanting. trito-Isaiah n. Brit. /ˌtrɪtəʊʌɪˈzʌɪə/ , /ˌtrʌɪtəʊʌɪˈzʌɪə/ , U.S. /ˌtraɪdoʊaɪˈzeɪə/ , /ˌtraɪdoʊaɪˈzaɪə/ a later author to whom a third section of the book of Isaiah is attributed by some critics. [After Deutero-Isaiah n. at deutero- comb. form .] ΘΚΠ society > faith > aspects of faith > Bible, Scripture > Testament > Old Testament > divisions of Old Testament > [noun] > Isaiah > author of evangelical prophet1547 evangelic prophet1683 Deutero-Isaiah1844 Second Isaiah1881 trito-Isaiah1908 1908 Athenæum 7 Nov. 565/2 A Trito-Isaiah besides a Deutero-Isaiah. tritomesal adj. Brit. /ˌtrɪtə(ʊ)ˈmɛsl/ , /ˌtrʌɪtə(ʊ)ˈmɛsl/ , /ˌtrɪtə(ʊ)ˈmiːsl/ , /ˌtrʌɪtə(ʊ)ˈmiːsl/ , U.S. /ˌtraɪdoʊˈmɛs(ə)l/ applied to a series of cells in the wings of hymenopterous insects, now usually called the submedian second discoidal and first apical cells. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Hymenoptera > [adjective] > of series of cells in wing tritomesal1826 1826 W. Kirby & W. Spence Introd. Entomol. III. xxxv. 632 The medial areolets..form three distinct series; these may be called the protomesal, deuteromesal, and tritomesal. tritotoxin n. Brit. /ˌtrɪtə(ʊ)ˈtɒksɪn/ , /ˌtrʌɪtə(ʊ)ˈtɒksɪn/ , U.S. /ˌtraɪdoʊˈtɑks(ə)n/ see quot. 1904 at prototoxin n. 1). tritovertebra n. Brit. /ˌtrɪtə(ʊ)ˈvəːtᵻbrə/ , /ˌtrʌɪtə(ʊ)ˈvəːtᵻbrə/ , U.S. /ˌtraɪdoʊˈvərdəbrə/ in Carus's nomenclature (1828), applied to the bones of the limbs reckoned as the third set of vertebræ. [After French tritovertèbre (1835 or earlier), itself after German Tertiarwirbel (1828).] ΘΚΠ the world > life > the body > structural parts > bone or bones > bones of arm or leg > [noun] focilea1400 tritovertebrac1860 c1860 S. Kneeland, Jr. in Amer. Cycl. XIII. 424 (Cent. Dict.) [Carus] makes what he calls proto-, deuto-, and trito-vertebræ. tritovertebral adj. Brit. /ˌtrɪtə(ʊ)ˈvəːtᵻbr(ə)l/ , /ˌtrʌɪtə(ʊ)ˈvəːtᵻbr(ə)l/ , U.S. /ˌtraɪdoʊˈvərdəbrəl/ , /ˌtraɪdoʊˌvərˈtibrəl/ pertaining to or of the nature of a tritovertebra. [Compare French tritovertébral (1835 or earlier).] ΘΚΠ the world > life > the body > structural parts > bone or bones > bones of arm or leg > [adjective] tritovertebralc1904 c1904 Encycl. Dict. Suppl. Tritovertebral. tritovum n. Brit. /trʌɪˈtəʊvəm/ , /trᵻˈtəʊvəm/ , U.S. /traɪˈtoʊv(ə)m/ a third stage of an ovum, succeeding the deutovum. [ < scientific Latin tritovum (Claparède, 1868) < trito- trito- comb. form + ovum ovum n.] ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > stage of ovum tritovum1877 1877 T. H. Huxley Man. Anat. Invertebrated Animals vii. 385 In the Acarus of the Mouse, Claparède observed that the deutovum stage is followed by a tritovum. tritozooid n. Brit. /ˌtrɪtə(ʊ)ˈzuːɔɪd/ , /ˌtrɪtə(ʊ)ˈzəʊɔɪd/ , /ˌtrʌɪtə(ʊ)ˈzuːɔɪd/ , /ˌtrʌɪtə(ʊ)ˈzəʊɔɪd/ , U.S. /ˌtraɪdoʊˈzoʊˌɔɪd/ , /ˌtraɪdoʊˈzuˌɔɪd/ a tertiary zooid, produced from a deuterozooid. ΘΚΠ the world > animals > invertebrates > colony or compound organism > [noun] > polyp or zooid of colony > tertiary zooid tritozooid1861 1861 J. R. Greene Man. Animal Kingdom II. 74 The medusoids budded by Sarsia are, probably, tritozoöids. †2. In Chemistry, formerly used, after T. Thomson ( Syst. Chem. (1804) I. 103), in naming the third oxide, sulphuret, iodide, etc. in a series in ascending order (cf. proto- comb. form 3a, deuto- comb. form 1). Obsolete. ΚΠ 1806 R. Patterson Adams's Lect. Nat. & Exper. Philos. (rev. ed.) I. App. 538 Minium, the tritoxide of lead. 1812 H. Davy Elements Chem. Philos. 369 The dark brown oxide [of manganese]..must be a tritoxide or an oxide containing three proportions of oxygene. 1825 T. Thomson Attempt to Establish First Princ. Chem. II. 481 Tritosulphuret of potassium. 1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) xi. 371 In certain states of disease, a peculiar compound, called by Mulder the tritoxide of proteine, makes its appearance. This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022). < comb. form1806
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