oo-comb. form

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

Forms: 1800s– oo-, 1800s– oö-. Before a vowel o-.

Origin: A borrowing from Greek. Etymons: Greek ᾠο-, ᾠόν.

Etymology: < ancient Greek ᾠο-, combining form of ᾠόν egg, ovum < the same Indo-European base as egg n. Compare post-classical and scientific Latin oo- (formations in which are found from at least the late 17th cent.), French oo- (formations in which are found from the mid 18th cent. denoting ovoid shapes, and from the mid 19th cent. in biological sense).Combining with second elements ultimately of Greek origin. Attested earliest in the first half of the 18th cent. in the Greek loan ooscopy n. English formations are found from the early 19th cent., the earliest having reference to egg-shaped objects (as e.g. oolite n.); a biological sense emerges in the mid 19th cent. and soon becomes more prominent. Most English formations date from the late 19th cent.

Of or relating to eggs or ova. Cf. ovi- comb. form¹, ovo- comb. form.

oocyan n.

Brit.

/ˌəʊə(ʊ)ˈsʌɪən/

/ˌəʊə(ʊ)ˈsʌɪan/

U.S.

/ˌoʊəˈsaɪən/

/ˌoʊoʊˈsaɪən/

[ < oo- comb. form + ancient Greek κύανος a dark-blue mineral (see cyano- comb. form)] now rare a blue pigment occurring in the shells of birds' eggs.

ΘΚΠ

the world > matter > colour > named colours > blue or blueness > blue colouring matter > [noun]

indigo-blue1838

indigotin1838

anthocyanin1853

phycocyan1866

stentorin1873

oocyan1875

phycocyanin1875

phycocyanogen1881

the world > life > biology > substance > pigment > [noun] > human or animal pigments > blue

uroglaucin1846

pyocyanine1860

oocyan1875

1875 C. Sorby in Proc. Zool. Soc. 355 Oocyan..is..often associated with yellow substances..therefore the solution is of a somewhat green-blue colour.

1932 Proc. Royal Soc. B. 110 364 The close relation of oocyan described by Lemberg..suggested the inclusion of ‘cyan’ as part of the name.

1950 Amer. Naturalist 84 130 Oocyan, a blue pigment of some bird eggs, belongs to this general class [sc. bilins].

† oogeny n. Biology Obsolete rare = oogenesis n.Apparently only attested in dictionaries or glossaries.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > reproductive cycle > [noun] > production of ovum

ovogenesis1857

ovigenesis1887

oogenesis1890

oogeny1890

1890 Cent. Dict. Oögeny, oögenesis.

† oograph n. Obsolete rare an apparatus for drawing the outline of a bird's egg.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Oögraph, a mechanical device for drawing accurately the outline of a bird's egg.

† oometer n. Obsolete rare an apparatus for taking measurements of birds' eggs.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Oömeter, an apparatus for measuring eggs; a mechanical contrivance for taking exact measurements of eggs.

† oometric adj. Obsolete rare of or relating to the measurement of birds' eggs.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Oömetric, of or pertaining to the measurement of eggs; of or pertaining to an oömeter.

† oometry n. Obsolete rare the measurement of birds' eggs.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Oömetry, the measurement of eggs.

oophyte n.

Brit.

/ˈəʊə(ʊ)fʌɪt/

U.S.

/ˈoʊəˌfaɪt/

Botany (now rare) a gametophyte; esp. the prothallus of a fern.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > types of

acrogen1834

endophyte1835

oophore1875

zygophyte1885

oophyte1886

microgametophyte1907

megagametophyte1915

macrogametophyte1931

1886 Athenæum 25 Dec. 867/1 The correlative growths may assume the characters of the oophyte or prothallus.

1908 New Phytologist 7 169 The writer has occasionly met with specimens of the female oophyte in which archegonia were present, but never with the mature sporophyte bearing spores.

† oorhodeine n. [ < oo- comb. form + ancient Greek ῥόδον rose (see rhodo- comb. form) + -ein suffix; compare -ine suffix⁵] Obsolete rare a reddish pigment occurring in the shells of birds' eggs.

ΘΚΠ

the world > animals > birds > egg > [noun] > part of

eggshellc1300

doupa1598

chicken knot1615

eye1653

oorhodeine1875

1875 C. Sorby in Proc. Zool. Soc. 354 Oorhodeine..occurs..in the shells of such a great number of eggs that its entire absence is exceptional.

1875 Encycl. Brit. III. 774/2 Inclined to think that oorhodeine is in some way or other closely related to cruentine.

ootype n.

Brit.

/ˈəʊə(ʊ)tʌɪp/

U.S.

/ˈoʊəˌtaɪp/

Zoology a small sac connecting the oviduct and the uterus in certain flatworms, in which the egg is fertilized and provided with a shell.

ΚΠ

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 649 In the monogenetic [Trematoda] its [sc. the egg's] shape varies, and is determined by that of the ‘ootype’.

1933 Amer. Midland Naturalist 14 659 Oötype, a genital organ in certain tapeworms. Not a nomenclatural term.

1994 E. E. Ruppert & R. D. Barnes Invertebr. Zool. (ed. 6) vi. 244/1 The ootype is surrounded by conspicuous unicellular gland cells important in egg capsule formation.

† ooxanthine n. [ < oo- comb. form + ancient Greek ξανθός yellow (see xantho- comb. form) + -ine suffix⁵; compare earlier xanthine n.] Obsolete rare a yellow pigment occurring in the shells of birds' eggs.

ΘΚΠ

the world > matter > colour > named colours > yellow or yellowness > colouring matter > [noun] > of natural bodies

polychroite1815

quercitrin1833

anthoxanthin1836

xanthophyll1838

xanthein1857

xanthin1857

phylloxanthin1858

safranine1868

phycoxanthin1873

ooxanthine1875

phytochrome1893

the world > life > biology > substance > pigment > [noun] > human or animal pigments > yellow > others

bilin1849

urochrome1864

ooxanthine1875

lyxoflavin1949

1875 C. Sorby in Proc. Zool. Soc. 356 Emu-eggs..are of a fine malachite green colour, due to a mixture of yellow ooxanthine with oocyan.

1875 C. Sorby in Proc. Zool. Soc. 357 Rufous ooxanthine..differs from yellow ooxanthine in absorbing light to a..greater distance from the blue end.

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

单词	oo-
释义	oo-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Forms: 1800s– oo-, 1800s– oö-. Before a vowel o-. Origin: A borrowing from Greek. Etymons: Greek ᾠο-, ᾠόν. Etymology: < ancient Greek ᾠο-, combining form of ᾠόν egg, ovum < the same Indo-European base as egg n. Compare post-classical and scientific Latin oo- (formations in which are found from at least the late 17th cent.), French oo- (formations in which are found from the mid 18th cent. denoting ovoid shapes, and from the mid 19th cent. in biological sense).Combining with second elements ultimately of Greek origin. Attested earliest in the first half of the 18th cent. in the Greek loan ooscopy n. English formations are found from the early 19th cent., the earliest having reference to egg-shaped objects (as e.g. oolite n.); a biological sense emerges in the mid 19th cent. and soon becomes more prominent. Most English formations date from the late 19th cent. Of or relating to eggs or ova. Cf. ovi- comb. form¹, ovo- comb. form. oocyan n. Brit. /ˌəʊə(ʊ)ˈsʌɪən/ , /ˌəʊə(ʊ)ˈsʌɪan/ , U.S. /ˌoʊəˈsaɪən/ , /ˌoʊoʊˈsaɪən/ [ < oo- comb. form + ancient Greek κύανος a dark-blue mineral (see cyano- comb. form)] now rare a blue pigment occurring in the shells of birds' eggs. ΘΚΠ the world > matter > colour > named colours > blue or blueness > blue colouring matter > [noun] indigo-blue1838 indigotin1838 anthocyanin1853 phycocyan1866 stentorin1873 oocyan1875 phycocyanin1875 phycocyanogen1881 the world > life > biology > substance > pigment > [noun] > human or animal pigments > blue uroglaucin1846 pyocyanine1860 oocyan1875 1875 C. Sorby in Proc. Zool. Soc. 355 Oocyan..is..often associated with yellow substances..therefore the solution is of a somewhat green-blue colour. 1932 Proc. Royal Soc. B. 110 364 The close relation of oocyan described by Lemberg..suggested the inclusion of ‘cyan’ as part of the name. 1950 Amer. Naturalist 84 130 Oocyan, a blue pigment of some bird eggs, belongs to this general class [sc. bilins]. † oogeny n. Biology Obsolete rare = oogenesis n.Apparently only attested in dictionaries or glossaries. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive cycle > [noun] > production of ovum ovogenesis1857 ovigenesis1887 oogenesis1890 oogeny1890 1890 Cent. Dict. Oögeny, oögenesis. † oograph n. Obsolete rare an apparatus for drawing the outline of a bird's egg.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Oögraph, a mechanical device for drawing accurately the outline of a bird's egg. † oometer n. Obsolete rare an apparatus for taking measurements of birds' eggs.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Oömeter, an apparatus for measuring eggs; a mechanical contrivance for taking exact measurements of eggs. † oometric adj. Obsolete rare of or relating to the measurement of birds' eggs.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Oömetric, of or pertaining to the measurement of eggs; of or pertaining to an oömeter. † oometry n. Obsolete rare the measurement of birds' eggs.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Oömetry, the measurement of eggs. oophyte n. Brit. /ˈəʊə(ʊ)fʌɪt/ , U.S. /ˈoʊəˌfaɪt/ Botany (now rare) a gametophyte; esp. the prothallus of a fern. ΘΚΠ the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > types of acrogen1834 endophyte1835 oophore1875 zygophyte1885 oophyte1886 microgametophyte1907 megagametophyte1915 macrogametophyte1931 1886 Athenæum 25 Dec. 867/1 The correlative growths may assume the characters of the oophyte or prothallus. 1908 New Phytologist 7 169 The writer has occasionly met with specimens of the female oophyte in which archegonia were present, but never with the mature sporophyte bearing spores. † oorhodeine n. [ < oo- comb. form + ancient Greek ῥόδον rose (see rhodo- comb. form) + -ein suffix; compare -ine suffix⁵] Obsolete rare a reddish pigment occurring in the shells of birds' eggs. ΘΚΠ the world > animals > birds > egg > [noun] > part of eggshellc1300 doupa1598 chicken knot1615 eye1653 oorhodeine1875 1875 C. Sorby in Proc. Zool. Soc. 354 Oorhodeine..occurs..in the shells of such a great number of eggs that its entire absence is exceptional. 1875 Encycl. Brit. III. 774/2 Inclined to think that oorhodeine is in some way or other closely related to cruentine. ootype n. Brit. /ˈəʊə(ʊ)tʌɪp/ , U.S. /ˈoʊəˌtaɪp/ Zoology a small sac connecting the oviduct and the uterus in certain flatworms, in which the egg is fertilized and provided with a shell. ΚΠ 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 649 In the monogenetic [Trematoda] its [sc. the egg's] shape varies, and is determined by that of the ‘ootype’. 1933 Amer. Midland Naturalist 14 659 Oötype, a genital organ in certain tapeworms. Not a nomenclatural term. 1994 E. E. Ruppert & R. D. Barnes Invertebr. Zool. (ed. 6) vi. 244/1 The ootype is surrounded by conspicuous unicellular gland cells important in egg capsule formation. † ooxanthine n. [ < oo- comb. form + ancient Greek ξανθός yellow (see xantho- comb. form) + -ine suffix⁵; compare earlier xanthine n.] Obsolete rare a yellow pigment occurring in the shells of birds' eggs. ΘΚΠ the world > matter > colour > named colours > yellow or yellowness > colouring matter > [noun] > of natural bodies polychroite1815 quercitrin1833 anthoxanthin1836 xanthophyll1838 xanthein1857 xanthin1857 phylloxanthin1858 safranine1868 phycoxanthin1873 ooxanthine1875 phytochrome1893 the world > life > biology > substance > pigment > [noun] > human or animal pigments > yellow > others bilin1849 urochrome1864 ooxanthine1875 lyxoflavin1949 1875 C. Sorby in Proc. Zool. Soc. 356 Emu-eggs..are of a fine malachite green colour, due to a mixture of yellow ooxanthine with oocyan. 1875 C. Sorby in Proc. Zool. Soc. 357 Rufous ooxanthine..differs from yellow ooxanthine in absorbing light to a..greater distance from the blue end. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022). < comb. form1875
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