octo-comb. form

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

Forms: before a vowel also oct-.

Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin octō-, octo; Greek ὀκτώ-, ὀκτώ.

Etymology: Partly < classical Latin octō-, combining form (in e.g. octōvir : see octovirate n.) of octo eight, and partly < ancient Greek ὀκτώ-, combining form (in e.g. ὀκτωδάκτυλος (see octodactylous adj. at sense 2), ὀκτώπους octopus n. and adj.) of ὀκτώ eight; classical Latin octo and ancient Greek ὀκτώ are cognate with eight adj. and n. (The Greek form is more frequently ὀκτα- octa- comb. form.)Attested earliest in borrowings and adaptations of Latin words, first in a single 14th-cent. formation (octogamy n.), and then in another isolated example in the first half of the 16th cent. (octonary n.). In the 17th cent. a small number of classical loans and adaptations occur (as e.g. octangle adj., octogenary adj., octovirate n.); they become increasingly common from the beginning of the 19th cent., especially in scientific and technical registers. 19th-cent. examples also include adaptations from French (octobass n.) and German (octarch adj.). Formations in English are found from the late 17th cent. (earliest in octodrant n. and octopartition n.) and include a small number of 18th-cent. examples (as e.g. octopetalous adj. at sense 2, octosyllabic adj.). English formations are numerous from the 19th cent., especially in scientific and technical registers. Usually compounded with second elements ultimately of Latin or Greek origin (although compare octothorp n.). A number of words in octo- have variants in octa- . In some instances this is probably due to remodelling after octa- comb. form (see e.g. forms s.vv. octofoil n., octoploid adj., octavalent adj.). However, in others it may reflect similar variation in Latin (see e.g. variants and scientific Latin forms cited s.v. Octagynia n., octagynous adj.). See further discussion and examples s.v. octa- comb. form. A small number of formations in octo- have abbreviated forms with the numeral 8 ultimately representing ancient Greek ὀκτώ- or classical Latin octō-. Compare French octo- (formations in which are found from at least the 19th cent.), Italian otto-.

1. Having eight (component parts, sections, etc.); eightfold. Cf. octa- comb. form.

octocarbon n.

Brit.

/ˈɒktə(ʊ)ˌkɑːb(ə)n/

U.S.

/ˈɑktoʊˌkɑrbən/

ΚΠ

1902 N.E.D. at Octo- Octocarbon.

† octochloride n. Obsolete

ΚΠ

1876 H. E. Armstrong Introd. Study Org. Chem. 123 Monochlorobenzene octochloride. C₆H₅Cl₉.

† octoblast n. Biology Obsolete rare an embryo at the stage of division in which it consists of eight cells.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Octoblast, an ovum of eight cells; a stage in germination when the single original cell has formed eight segmentation-cells.

† octobrachiate adj. Zoology Obsolete rare having eight arms, as a cephalopod of the order Octopoda.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Octobrachiate, having eight brachia, arms, or rays; octopod, as certain cephalopods.

† octoceratous adj. [after scientific Latin Octocerata (1824 or earlier), family name (after French Octocères : see octocerous adj.)] Zoology Obsolete rare = octocerous adj.Apparently only attested in dictionaries or glossaries.

ΚΠ

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octoceratus,..octoceratous.

† octocorallan n. Zoology Obsolete rare = octocorallian n.Apparently only attested in dictionaries or glossaries.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Anthozoa Actinozoa > member of Octocoralla

octactinian1888

octocorallan1890

octocoral1936

octocorallian1936

1890 Cent. Dict. Octocorallan, one of the Octocoralla; an octomerous coral.

octocoralline n. and adj.

Brit.

/ˌɒktə(ʊ)ˈkɒrəlʌɪn/

/ˌɒktə(ʊ)ˈkɒrəlɪn/

U.S.

/ˌɑktoʊˈkɔrələn/

/ˌɑktoʊˈkɔrəˌlin/

Zoology rare = octocorallian n. and adj.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of or relating to the Anthozoa > belonging to subclass Octocoralla

octocoralline1890

octactinian1902

octocorallian1950

1890 Cent. Dict. Octocoralline... I. a. Of or pertaining to the Octocoralla. II. n. A member of the Octocoralla.

1968 Proc. Royal Soc. 1967–8 B. 169 329 Coral is a loose term which must..be restricted by confining it to stony corals... This includes hydrozoans such as Millepora and octocorallines such as Heliopora and Tubipora.

† octocotyloid adj. Zoology Obsolete rare having eight cup-shaped hollows, as certain worms.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Octocotyloid, having eight cotyloid fossettes or bothria, as a worm.

† octodactyl adj. [ < octo- comb. form + -dactyl comb. form; compare French octodactyle (1868 in Littré) and also earlier octodactylous adj.] Zoology Obsolete = octodactylous adj.

ΘΚΠ

the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having eight digits

octodactylous1857

octodactyl1888

1888 Proc. Zool. Soc. 152 Pleading the cause of an octodactyle ‘Urform’.

octodactylous adj.

Brit.

/ˌɒktə(ʊ)ˈdaktᵻləs/

/ˌɒktə(ʊ)ˈdaktl̩əs/

U.S.

/ˌɑktoʊˈdæktələs/

/ˌɑktəˈdæktələs/

[ < octo- comb. form + -dactylous comb. form, after scientific Latin octodactylus (1790 as a specific epithet); compare ancient Greek ὀκτωδάκτυλος] Zoology having eight digits.

ΘΚΠ

the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having eight digits

octodactylous1857

octodactyl1888

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octodactylus, having eight fingers,..octodactylous.

1939 L. De Vries Ger.-Eng. Sci. Dict. 11 Acht-gliedrig, eight membered; -klauig, octodactylous.

1996 Trans. Royal Soc. Edinb. Earth Sci. 87 363 The octodactylous forelimb and hindlimb each articulate with an unsutured, foraminate endoskeletal girdle.

† octodecimal adj. [ < octo- comb. form + decimal adj., after classical Latin octōdecim eighteen; compare slightly earlier octodecimo n.] Crystallography Obsolete rare (of a crystal) having eight prismatic faces parallel to the central axis and five faces at each pyramidal end.

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

1817 R. Jameson Treat. External Characters Minerals (ed. 3) 206 Octo-decimal artificial blue vitriol.

octodentate adj.

Brit.

/ˌɒktə(ʊ)ˈdɛnteɪt/

U.S.

/ˌɑktoʊˈdɛnˌteɪt/

[ < octo- comb. form + dentate adj.; compare scientific Latin octodentata (1770 as a specific epithet)] rare having eight teeth.

ΚΠ

1828 N. Webster Amer. Dict. Eng. Lang. Octodentate, having eight teeth.

1999 Colloids & Surfaces A. 160 218/1 DTPA [diethylenetriaminepentaacetic acid], an octodentate ligand, forms a strong 1:1 (ligand:metal) chelate in solutions at high pH.

† octoduodecimal adj. Crystallography Obsolete rare (of a crystal) having eight prismatic faces parallel to the central axis and six faces at each pyramidal end.

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

1817 R. Jameson Treat. External Characters Minerals (ed. 3) 206 Octo-duodecimal artificial blue vitriol.

† octofid adj. Botany Obsolete (of a calyx or corolla) divided into eight 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

the world > relative properties > number > specific numbers > eight > [adjective] > divided into eight

octofid1760

octopartite1854

1760 J. Lee Introd. Bot. ii. xxxii. 153 Laurus, with an octofid Corolla.

1875 C. Darwin Insectivorous Plants xiii. 300 The minute octofid processes with which the leaves are studded.

octoglot adj.

Brit.

/ˈɒktə(ʊ)ɡlɒt/

U.S.

/ˈɑktəˌɡlɑt/

rare written in eight languages.

ΘΚΠ

the mind > language > a language > using or speaking languages > [adjective] > multilingual > characterized by the use of many languages

pentecontaglossal1846

polyglot1851

octoglot1888

polyglossic1983

1888 N.E.D. at Calepin There was an octoglot edition by Passerat in 1609.

octolateral adj.

Brit.

/ˌɒktə(ʊ)ˈlat(ə)rəl/

/ˌɒktə(ʊ)ˈlat(ə)rl̩/

U.S.

/ˌɑktoʊˈlædərəl/

/ˌɑktoʊˈlætrəl/

eight-sided; formed of eight straight lines.

ΘΚΠ

the world > space > shape > angularity > specific angular shape > [adjective] > polygonal > octagonal

eight-squarea1552

octagonal1571

octagonian1598

octangle1613

octangular1649

octagon1679

octolateral1890

1890 Cent. Dict. (at cited word) Octolateral dodecagon, a figure formed of eight straight lines, and having twelve angles or intersections lying on a cubic curve.

1938 J. S. Herrström tr. A. Hahr Archit. in Sweden vi. 34 At the outer corners are octolateral towers with lantern-crowned cupolas, encircled with a wreath of small gables.

† octolocular adj. Botany Obsolete rare (of a seed-vessel) having eight chambers.Apparently only attested in dictionaries or glossaries.

ΚΠ

1828 N. Webster Amer. Dict. Eng. Lang. Octolocular, in botany, having eight cells for seeds.

† octonematous adj. Zoology Obsolete rare = octonemous adj.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Octonematous, having eight filamentous or thready parts or organs.

† octonemous adj. [ < octo- comb. form + ancient Greek νῆμα thread (see nemato- comb. form) + -ous suffix] Zoology Obsolete rare having eight filaments or filamentous organs.Apparently only attested in dictionaries or glossaries.

ΚΠ

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octonemus, having eight arms or tentacula, as the umbrellæ of the Favonia octonema: octonemous.

† octopetalous adj. [ < octo- comb. form + -petalous comb. form; compare later scientific Latin octopetalus (Linnaeus Species Plantarum (1753) I. 501), French octopétale (1797), octopétal (1803)] Botany Obsolete rare having eight petals.

ΚΠ

1736 N. Bailey et al. Dictionarium Britannicum (ed. 2) Octopetalous.

1853 A. Gray Bot. Text-bk. (ed. 4) 286 A corolla of two petals is dipetalous;..of eight, octopetalous; [etc.].

† octophthalmous adj. [ < octo- comb. form + ancient Greek ὀϕθαλμός eye (see ophthalmo- comb. form) + -ous suffix] Zoology Obsolete rare having eight eyes.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Octophthalmous, having eight eyes, as a spider; octonocular.

† octophyllous adj. [ < octo- comb. form + -phyllous comb. form, after scientific Latin octophyllus (1790 as a specific epithet)] Botany Obsolete rare (of a compound leaf) consisting of eight leaflets.Apparently only attested in dictionaries or glossaries.

ΚΠ

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octophyllus, composed of eight folioles..octophyllous.

octoradial adj.

Brit.

/ˌɒktə(ʊ)ˈreɪdɪəl/

U.S.

/ˌɑktoʊˈreɪdiəl/

Zoology having or consisting of eight rays.

ΘΚΠ

the world > space > relative position > inclination > divergence > [adjective] > characterized by radial divergence > having radiating parts > many or spec. number

triradiated1786

octoradiated1828

multiradiated1840

multiradiate1846

triradiate1846

octoradiate1857

triradiala1886

octoradial1890

octoradiant1911

the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of or relating to the Medusae > relating to or resembling a Medusa > having eight rays

octoradial1890

1890 Athenæum 12 July 66/3 A simple octoradial medusa.

1954 G. R. De Beer in J. Huxley et al. Evol. as Process 31 Their [sc. the Ctenophora] most characteristic feature is their planktonic habit of life and their octoradial symmetry.

1996 Systematic Biol. 45 209/1 At least one living priapulid has an octoradial foregut.

octoradiant adj.

Brit.

/ˌɒktə(ʊ)ˈreɪdɪənt/

U.S.

/ˌɑktoʊˈreɪdiənt/

rare having eight rays.

ΘΚΠ

the world > space > relative position > inclination > divergence > [adjective] > characterized by radial divergence > having radiating parts > many or spec. number

triradiated1786

octoradiated1828

multiradiated1840

multiradiate1846

triradiate1846

octoradiate1857

triradiala1886

octoradial1890

octoradiant1911

1911 M. Beerbohm Zuleika Dobson xviii. 271 He affixed to his breast the octoradiant star, so much larger and more lustrous than any actual star in heaven.

† octoradiate adj. [ < octo- comb. form + radiate adj., after scientific Latin octoradiata (1790 as a specific epithet)] Zoology Obsolete rare = octoradial adj.

ΘΚΠ

the world > space > relative position > inclination > divergence > [adjective] > characterized by radial divergence > having radiating parts > many or spec. number

triradiated1786

octoradiated1828

multiradiated1840

multiradiate1846

triradiate1846

octoradiate1857

triradiala1886

octoradial1890

octoradiant1911

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octoradiatus,..octoradiate.

1880 Amer. Naturalist 14 152 On some octoradiate silicious sponges.

† octoradiated adj. Obsolete rare having eight rays.Apparently only attested in dictionaries or glossaries.

ΘΚΠ

the world > space > relative position > inclination > divergence > [adjective] > characterized by radial divergence > having radiating parts > many or spec. number

triradiated1786

octoradiated1828

multiradiated1840

multiradiate1846

triradiate1846

octoradiate1857

triradiala1886

octoradial1890

octoradiant1911

1828 N. Webster Amer. Dict. Eng. Lang. Octoradiated, having eight rays.

† octosepalous adj. [ < octo- comb. form + sepal n. + -ous suffix, after French octosésepale (1817)] Botany Obsolete rare having eight sepals.

ΚΠ

1890 Cent. Dict. Octosepalous, in bot., having eight sepals.

† octosexdecimal adj. Crystallography Obsolete rare (of a crystal) having eight prismatic faces parallel to the central axis and eight faces at each pyramidal end.

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

1817 R. Jameson Treat. External Characters Minerals (ed. 3) 312 Observed in the octosexdecimal topaz.

† octospermous adj. Botany Obsolete rare producing or containing eight seeds.Apparently only attested in dictionaries or glossaries.

ΚΠ

1828 N. Webster Amer. Dict. Eng. Lang. Octospermous, containing eight seeds.

octospore n.

Brit.

/ˈɒktə(ʊ)spɔː/

U.S.

/ˈɑktəˌspɔr/

Biology any of a group of eight spores derived from a single progenitor cell.

ΘΚΠ

the world > plants > particular plants > algae > [noun] > parts, cells, or spores

anthosperm1844

trichosporangium1857

zoogonidium1857

octospore1870

macrozoogonidium1880

parthenospore1881

akinete1884

parthenogonidium1885

parthenosperm1889

phycobilin1945

phycobiliprotein1966

phycobilisome1966

phycoplast1972

1870 R. Bentley Man. Bot. (ed. 2) i. v. 384 The octospores ultimately decay unless fecundated by antherozoids.

1910 Encycl. Brit. I. 592/1 The asexual cells are termed tetraspores on account of the usual occurrence of four in each sporangium. What may be termed monospores, bispores and octospores, however, are not unknown.

2000 Jrnl. Invertebr. Pathol. 76 263 Many more fat body cells contained vegetative stages and primary spores at 4 and 5 days postinfection, and diplokaryotic spores and immature octospores were also present.

octosporous adj.

Brit.

/ɒkˈtɒspərəs/

U.S.

/ɑkˈtɑspərəs/

/ˌɑktəˈspɔrəs/

/ˌɑktoʊˈspɔrəs/

Biology producing spores in groups of eight.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > spore or sporule > [adjective] > having specific number of spores

monosporous1857

octosporous1857

trisporic1866

monospored1882

trisporous1891

1857 M. J. Berkeley Introd. Cryptogamic Bot. 247 In Nectria inaurata the same hymenium produces ordinary octosporous asci, and others filled with a multitude of far more minute bodies.

1992 Jrnl. Protozool. 39 392 Octosporous development results in eight haploid spores being formed in a sporophorous vesicle.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	octo-
释义	octo-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Forms: before a vowel also oct-. Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin octō-, octo; Greek ὀκτώ-, ὀκτώ. Etymology: Partly < classical Latin octō-, combining form (in e.g. octōvir : see octovirate n.) of octo eight, and partly < ancient Greek ὀκτώ-, combining form (in e.g. ὀκτωδάκτυλος (see octodactylous adj. at sense 2), ὀκτώπους octopus n. and adj.) of ὀκτώ eight; classical Latin octo and ancient Greek ὀκτώ are cognate with eight adj. and n. (The Greek form is more frequently ὀκτα- octa- comb. form.)Attested earliest in borrowings and adaptations of Latin words, first in a single 14th-cent. formation (octogamy n.), and then in another isolated example in the first half of the 16th cent. (octonary n.). In the 17th cent. a small number of classical loans and adaptations occur (as e.g. octangle adj., octogenary adj., octovirate n.); they become increasingly common from the beginning of the 19th cent., especially in scientific and technical registers. 19th-cent. examples also include adaptations from French (octobass n.) and German (octarch adj.). Formations in English are found from the late 17th cent. (earliest in octodrant n. and octopartition n.) and include a small number of 18th-cent. examples (as e.g. octopetalous adj. at sense 2, octosyllabic adj.). English formations are numerous from the 19th cent., especially in scientific and technical registers. Usually compounded with second elements ultimately of Latin or Greek origin (although compare octothorp n.). A number of words in octo- have variants in octa- . In some instances this is probably due to remodelling after octa- comb. form (see e.g. forms s.vv. octofoil n., octoploid adj., octavalent adj.). However, in others it may reflect similar variation in Latin (see e.g. variants and scientific Latin forms cited s.v. Octagynia n., octagynous adj.). See further discussion and examples s.v. octa- comb. form. A small number of formations in octo- have abbreviated forms with the numeral 8 ultimately representing ancient Greek ὀκτώ- or classical Latin octō-. Compare French octo- (formations in which are found from at least the 19th cent.), Italian otto-. 1. Having eight (component parts, sections, etc.); eightfold. Cf. octa- comb. form. octocarbon n. Brit. /ˈɒktə(ʊ)ˌkɑːb(ə)n/ , U.S. /ˈɑktoʊˌkɑrbən/ ΚΠ 1902 N.E.D. at Octo- Octocarbon. † octochloride n. Obsolete ΚΠ 1876 H. E. Armstrong Introd. Study Org. Chem. 123 Monochlorobenzene octochloride. C₆H₅Cl₉. 2. † octoblast n. Biology Obsolete rare an embryo at the stage of division in which it consists of eight cells.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Octoblast, an ovum of eight cells; a stage in germination when the single original cell has formed eight segmentation-cells. † octobrachiate adj. Zoology Obsolete rare having eight arms, as a cephalopod of the order Octopoda.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Octobrachiate, having eight brachia, arms, or rays; octopod, as certain cephalopods. † octoceratous adj. [after scientific Latin Octocerata (1824 or earlier), family name (after French Octocères : see octocerous adj.)] Zoology Obsolete rare = octocerous adj.Apparently only attested in dictionaries or glossaries. ΚΠ 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octoceratus,..octoceratous. † octocorallan n. Zoology Obsolete rare = octocorallian n.Apparently only attested in dictionaries or glossaries. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Anthozoa Actinozoa > member of Octocoralla octactinian1888 octocorallan1890 octocoral1936 octocorallian1936 1890 Cent. Dict. Octocorallan, one of the Octocoralla; an octomerous coral. octocoralline n. and adj. Brit. /ˌɒktə(ʊ)ˈkɒrəlʌɪn/ , /ˌɒktə(ʊ)ˈkɒrəlɪn/ , U.S. /ˌɑktoʊˈkɔrələn/ , /ˌɑktoʊˈkɔrəˌlin/ Zoology rare = octocorallian n. and adj. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of or relating to the Anthozoa > belonging to subclass Octocoralla octocoralline1890 octactinian1902 octocorallian1950 1890 Cent. Dict. Octocoralline... I. a. Of or pertaining to the Octocoralla. II. n. A member of the Octocoralla. 1968 Proc. Royal Soc. 1967–8 B. 169 329 Coral is a loose term which must..be restricted by confining it to stony corals... This includes hydrozoans such as Millepora and octocorallines such as Heliopora and Tubipora. † octocotyloid adj. Zoology Obsolete rare having eight cup-shaped hollows, as certain worms.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Octocotyloid, having eight cotyloid fossettes or bothria, as a worm. † octodactyl adj. [ < octo- comb. form + -dactyl comb. form; compare French octodactyle (1868 in Littré) and also earlier octodactylous adj.] Zoology Obsolete = octodactylous adj. ΘΚΠ the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having eight digits octodactylous1857 octodactyl1888 1888 Proc. Zool. Soc. 152 Pleading the cause of an octodactyle ‘Urform’. octodactylous adj. Brit. /ˌɒktə(ʊ)ˈdaktᵻləs/ , /ˌɒktə(ʊ)ˈdaktl̩əs/ , U.S. /ˌɑktoʊˈdæktələs/ , /ˌɑktəˈdæktələs/ [ < octo- comb. form + -dactylous comb. form, after scientific Latin octodactylus (1790 as a specific epithet); compare ancient Greek ὀκτωδάκτυλος] Zoology having eight digits. ΘΚΠ the world > animals > animal body > general parts > body and limbs > [adjective] > having separate digits > having several digits > having eight digits octodactylous1857 octodactyl1888 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octodactylus, having eight fingers,..octodactylous. 1939 L. De Vries Ger.-Eng. Sci. Dict. 11 Acht-gliedrig, eight membered; -klauig, octodactylous. 1996 Trans. Royal Soc. Edinb. Earth Sci. 87 363 The octodactylous forelimb and hindlimb each articulate with an unsutured, foraminate endoskeletal girdle. † octodecimal adj. [ < octo- comb. form + decimal adj., after classical Latin octōdecim eighteen; compare slightly earlier octodecimo n.] Crystallography Obsolete rare (of a crystal) having eight prismatic faces parallel to the central axis and five faces at each pyramidal end. 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 1817 R. Jameson Treat. External Characters Minerals (ed. 3) 206 Octo-decimal artificial blue vitriol. octodentate adj. Brit. /ˌɒktə(ʊ)ˈdɛnteɪt/ , U.S. /ˌɑktoʊˈdɛnˌteɪt/ [ < octo- comb. form + dentate adj.; compare scientific Latin octodentata (1770 as a specific epithet)] rare having eight teeth. ΚΠ 1828 N. Webster Amer. Dict. Eng. Lang. Octodentate, having eight teeth. 1999 Colloids & Surfaces A. 160 218/1 DTPA [diethylenetriaminepentaacetic acid], an octodentate ligand, forms a strong 1:1 (ligand:metal) chelate in solutions at high pH. † octoduodecimal adj. Crystallography Obsolete rare (of a crystal) having eight prismatic faces parallel to the central axis and six faces at each pyramidal end. 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 1817 R. Jameson Treat. External Characters Minerals (ed. 3) 206 Octo-duodecimal artificial blue vitriol. † octofid adj. Botany Obsolete (of a calyx or corolla) divided into eight 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 the world > relative properties > number > specific numbers > eight > [adjective] > divided into eight octofid1760 octopartite1854 1760 J. Lee Introd. Bot. ii. xxxii. 153 Laurus, with an octofid Corolla. 1875 C. Darwin Insectivorous Plants xiii. 300 The minute octofid processes with which the leaves are studded. octoglot adj. Brit. /ˈɒktə(ʊ)ɡlɒt/ , U.S. /ˈɑktəˌɡlɑt/ rare written in eight languages. ΘΚΠ the mind > language > a language > using or speaking languages > [adjective] > multilingual > characterized by the use of many languages pentecontaglossal1846 polyglot1851 octoglot1888 polyglossic1983 1888 N.E.D. at Calepin There was an octoglot edition by Passerat in 1609. octolateral adj. Brit. /ˌɒktə(ʊ)ˈlat(ə)rəl/ , /ˌɒktə(ʊ)ˈlat(ə)rl̩/ , U.S. /ˌɑktoʊˈlædərəl/ , /ˌɑktoʊˈlætrəl/ eight-sided; formed of eight straight lines. ΘΚΠ the world > space > shape > angularity > specific angular shape > [adjective] > polygonal > octagonal eight-squarea1552 octagonal1571 octagonian1598 octangle1613 octangular1649 octagon1679 octolateral1890 1890 Cent. Dict. (at cited word) Octolateral dodecagon, a figure formed of eight straight lines, and having twelve angles or intersections lying on a cubic curve. 1938 J. S. Herrström tr. A. Hahr Archit. in Sweden vi. 34 At the outer corners are octolateral towers with lantern-crowned cupolas, encircled with a wreath of small gables. † octolocular adj. Botany Obsolete rare (of a seed-vessel) having eight chambers.Apparently only attested in dictionaries or glossaries. ΚΠ 1828 N. Webster Amer. Dict. Eng. Lang. Octolocular, in botany, having eight cells for seeds. † octonematous adj. Zoology Obsolete rare = octonemous adj.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Octonematous, having eight filamentous or thready parts or organs. † octonemous adj. [ < octo- comb. form + ancient Greek νῆμα thread (see nemato- comb. form) + -ous suffix] Zoology Obsolete rare having eight filaments or filamentous organs.Apparently only attested in dictionaries or glossaries. ΚΠ 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octonemus, having eight arms or tentacula, as the umbrellæ of the Favonia octonema: octonemous. † octopetalous adj. [ < octo- comb. form + -petalous comb. form; compare later scientific Latin octopetalus (Linnaeus Species Plantarum (1753) I. 501), French octopétale (1797), octopétal (1803)] Botany Obsolete rare having eight petals. ΚΠ 1736 N. Bailey et al. Dictionarium Britannicum (ed. 2) Octopetalous. 1853 A. Gray Bot. Text-bk. (ed. 4) 286 A corolla of two petals is dipetalous;..of eight, octopetalous; [etc.]. † octophthalmous adj. [ < octo- comb. form + ancient Greek ὀϕθαλμός eye (see ophthalmo- comb. form) + -ous suffix] Zoology Obsolete rare having eight eyes.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Octophthalmous, having eight eyes, as a spider; octonocular. † octophyllous adj. [ < octo- comb. form + -phyllous comb. form, after scientific Latin octophyllus (1790 as a specific epithet)] Botany Obsolete rare (of a compound leaf) consisting of eight leaflets.Apparently only attested in dictionaries or glossaries. ΚΠ 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octophyllus, composed of eight folioles..octophyllous. octoradial adj. Brit. /ˌɒktə(ʊ)ˈreɪdɪəl/ , U.S. /ˌɑktoʊˈreɪdiəl/ Zoology having or consisting of eight rays. ΘΚΠ the world > space > relative position > inclination > divergence > [adjective] > characterized by radial divergence > having radiating parts > many or spec. number triradiated1786 octoradiated1828 multiradiated1840 multiradiate1846 triradiate1846 octoradiate1857 triradiala1886 octoradial1890 octoradiant1911 the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [adjective] > of or relating to the Medusae > relating to or resembling a Medusa > having eight rays octoradial1890 1890 Athenæum 12 July 66/3 A simple octoradial medusa. 1954 G. R. De Beer in J. Huxley et al. Evol. as Process 31 Their [sc. the Ctenophora] most characteristic feature is their planktonic habit of life and their octoradial symmetry. 1996 Systematic Biol. 45 209/1 At least one living priapulid has an octoradial foregut. octoradiant adj. Brit. /ˌɒktə(ʊ)ˈreɪdɪənt/ , U.S. /ˌɑktoʊˈreɪdiənt/ rare having eight rays. ΘΚΠ the world > space > relative position > inclination > divergence > [adjective] > characterized by radial divergence > having radiating parts > many or spec. number triradiated1786 octoradiated1828 multiradiated1840 multiradiate1846 triradiate1846 octoradiate1857 triradiala1886 octoradial1890 octoradiant1911 1911 M. Beerbohm Zuleika Dobson xviii. 271 He affixed to his breast the octoradiant star, so much larger and more lustrous than any actual star in heaven. † octoradiate adj. [ < octo- comb. form + radiate adj., after scientific Latin octoradiata (1790 as a specific epithet)] Zoology Obsolete rare = octoradial adj. ΘΚΠ the world > space > relative position > inclination > divergence > [adjective] > characterized by radial divergence > having radiating parts > many or spec. number triradiated1786 octoradiated1828 multiradiated1840 multiradiate1846 triradiate1846 octoradiate1857 triradiala1886 octoradial1890 octoradiant1911 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Octoradiatus,..octoradiate. 1880 Amer. Naturalist 14 152 On some octoradiate silicious sponges. † octoradiated adj. Obsolete rare having eight rays.Apparently only attested in dictionaries or glossaries. ΘΚΠ the world > space > relative position > inclination > divergence > [adjective] > characterized by radial divergence > having radiating parts > many or spec. number triradiated1786 octoradiated1828 multiradiated1840 multiradiate1846 triradiate1846 octoradiate1857 triradiala1886 octoradial1890 octoradiant1911 1828 N. Webster Amer. Dict. Eng. Lang. Octoradiated, having eight rays. † octosepalous adj. [ < octo- comb. form + sepal n. + -ous suffix, after French octosésepale (1817)] Botany Obsolete rare having eight sepals. ΚΠ 1890 Cent. Dict. Octosepalous, in bot., having eight sepals. † octosexdecimal adj. Crystallography Obsolete rare (of a crystal) having eight prismatic faces parallel to the central axis and eight faces at each pyramidal end. 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 1817 R. Jameson Treat. External Characters Minerals (ed. 3) 312 Observed in the octosexdecimal topaz. † octospermous adj. Botany Obsolete rare producing or containing eight seeds.Apparently only attested in dictionaries or glossaries. ΚΠ 1828 N. Webster Amer. Dict. Eng. Lang. Octospermous, containing eight seeds. octospore n. Brit. /ˈɒktə(ʊ)spɔː/ , U.S. /ˈɑktəˌspɔr/ Biology any of a group of eight spores derived from a single progenitor cell. ΘΚΠ the world > plants > particular plants > algae > [noun] > parts, cells, or spores anthosperm1844 trichosporangium1857 zoogonidium1857 octospore1870 macrozoogonidium1880 parthenospore1881 akinete1884 parthenogonidium1885 parthenosperm1889 phycobilin1945 phycobiliprotein1966 phycobilisome1966 phycoplast1972 1870 R. Bentley Man. Bot. (ed. 2) i. v. 384 The octospores ultimately decay unless fecundated by antherozoids. 1910 Encycl. Brit. I. 592/1 The asexual cells are termed tetraspores on account of the usual occurrence of four in each sporangium. What may be termed monospores, bispores and octospores, however, are not unknown. 2000 Jrnl. Invertebr. Pathol. 76 263 Many more fat body cells contained vegetative stages and primary spores at 4 and 5 days postinfection, and diplokaryotic spores and immature octospores were also present. octosporous adj. Brit. /ɒkˈtɒspərəs/ , U.S. /ɑkˈtɑspərəs/ , /ˌɑktəˈspɔrəs/ , /ˌɑktoʊˈspɔrəs/ Biology producing spores in groups of eight. ΘΚΠ the world > plants > part of plant > reproductive part(s) > spore or sporule > [adjective] > having specific number of spores monosporous1857 octosporous1857 trisporic1866 monospored1882 trisporous1891 1857 M. J. Berkeley Introd. Cryptogamic Bot. 247 In Nectria inaurata the same hymenium produces ordinary octosporous asci, and others filled with a multitude of far more minute bodies. 1992 Jrnl. Protozool. 39 392 Octosporous development results in eight haploid spores being formed in a sporophorous vesicle. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < comb. form1736
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