pygo-comb. form

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

Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin pygo-; Greek πυγο-.

Etymology: < scientific Latin pygo- (in e.g. Pygobranchia (see pygobranchiate adj. ), Pygopus pygopod n.) and its etymon ancient Greek πυγο-, combining form (in e.g. πυγολαμπίς glow-worm, literally ‘fire-tail’) of πυγή rump, of unknown origin. Compare French pygo- (formations with which are found from the first half of the 19th cent.).Formations in English are found from the first half of the 19th cent. (compare pygopodous adj.). Combining with second elements ultimately of Greek origin.

Of or relating to the posterior or rump of an animal.

† pygobranchiate adj. [ < pygo- comb. form + -branchiate comb. form, after scientific Latin Pygobranchia, former group name (J. E. Gray 1821, in London Med. Repository 15 234)] Zoology Obsolete rare of or belonging to the former group Pygobranchia of gastropod molluscs having gills arranged round the anus (corresponding to the nudibranch suborder Doridacea).Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Pygobranchiate, having gills around the anus.

† pygobranchious adj. [ < pygo- comb. form + ancient Greek βράγχια gills (see branchiae n.) + -ous suffix, after scientific Latin Pygobranchia (see pygobranchiate adj.)] Zoology Obsolete rare = pygobranchiate adj.Apparently only attested in dictionaries or glossaries.

ΚΠ

1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1048/1 Pygobranchius,..applied by Gray to an order (Pygobranchia) of the Gasteropodophora..; pygobranchious.

pygopagous adj.

Brit.

/pʌɪˈɡɒpəɡəs/

U.S.

/paɪˈɡɑpəɡəs/

Medicine designating conjoined twins of the pygopagus type.

ΘΚΠ

the world > health and disease > ill health > deformity > [adjective] > Siamese twins

bicephalous1803

Siamese1833

thoracopagous1894

xiphopagous1894

pygopagous1895

xiphopagic190.

1895 Teratologia 2 274 Several of the pygopagous twins of whom there are scientific records, survived birth and lived for a number of years.

1902 Brit. Med. Jrnl. 5 Apr. 850 Pygopagous twins..united together in the region of the nates and having each its own pelvis.

1979 Jrnl. Pediatric Surg. 14 554 A set of female pygopagous twins was successfully separated.

pygopagus n.

Brit.

/pʌɪˈɡɒpəɡəs/

U.S.

/paɪˈɡɑpəɡəs/

[ < pygo- comb. form + -pagus comb. form, after French pygopage (see pygopage n.); compare earlier pygopage n.] Medicine a pair of conjoined twins united in the region of the buttocks (usually at the sacrum and coccyx); either of a pair of such twins.

ΘΚΠ

the world > health and disease > ill health > deformity > [noun] > congenital union > Siamese twins

Siamese twins1829

pygopage1844

xiphopagus1844

xiphodyme1861

pygopagus1866

thoracopagus1894

1866 Trans. Med. Soc. N.Y. 224 in Docs. Assembly State N.Y. (89th Session, Doc. No. 133) The symmetrical pygopagus is exceedingly rare.

1903 J. W. Williams Obstetr. xxxix. 680 Ischiopagi and pygopagi, as a rule, call for complicated and difficult manœuvres before delivery can be effected.

1997 Amer. Jrnl. Perinatol. 14 25 Three pairs of female conjoined twins—a xiphoomphalopagus, a pygopagus, and a thoracopagus—were encountered during the past 10 years.

2004 Child's Nerv. Syst. 20 640 A pair of pygopagi had back-to-back fusion of the conus.

pygopodine adj.

Brit.

/pʌɪˈɡɒpədʌɪn/

/pʌɪˈɡɒpədiːn/

U.S.

/paɪˈɡɑpəˌdaɪn/

/paɪˈɡɑpəˌdin/

Zoology rare (now disused) = pygopodous adj.

ΚΠ

1904 Amer. Naturalist 38 13 Drawings of the bones of pygopodine birds.

pygopodous adj.

Brit.

/pʌɪˈɡɒpədəs/

U.S.

/paɪˈɡɑpədəs/

[after scientific Latin Pygopus (see pygopod n.)] Zoology (now disused) designating aquatic birds having the legs placed far back on the body, including auks, grebes, and divers (formerly sometimes classified together as a suborder Pygopodes).

ΘΚΠ

the world > animals > birds > parts of or bird defined by > [adjective] > of legs > belonging to group defined by

pygopodous1869

homalogonatous1874

pygopod1890

1869 E. Coues in Proc. Acad. Nat. Sci. Philadelphia 207 In Pygopodous families the maximum of backward position of the legs and upright position of the body is attained.

1903 Amer. Naturalist 37 63 It is very likely that Hesperornis used its broad, horizontally flattened tail..as a propeller and rudder to the aquatic locomotion of this ancient pygopodous fowl.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	pygo-
释义	pygo-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin pygo-; Greek πυγο-. Etymology: < scientific Latin pygo- (in e.g. Pygobranchia (see pygobranchiate adj. ), Pygopus pygopod n.) and its etymon ancient Greek πυγο-, combining form (in e.g. πυγολαμπίς glow-worm, literally ‘fire-tail’) of πυγή rump, of unknown origin. Compare French pygo- (formations with which are found from the first half of the 19th cent.).Formations in English are found from the first half of the 19th cent. (compare pygopodous adj.). Combining with second elements ultimately of Greek origin. Of or relating to the posterior or rump of an animal. † pygobranchiate adj. [ < pygo- comb. form + -branchiate comb. form, after scientific Latin Pygobranchia, former group name (J. E. Gray 1821, in London Med. Repository 15 234)] Zoology Obsolete rare of or belonging to the former group Pygobranchia of gastropod molluscs having gills arranged round the anus (corresponding to the nudibranch suborder Doridacea).Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Pygobranchiate, having gills around the anus. † pygobranchious adj. [ < pygo- comb. form + ancient Greek βράγχια gills (see branchiae n.) + -ous suffix, after scientific Latin Pygobranchia (see pygobranchiate adj.)] Zoology Obsolete rare = pygobranchiate adj.Apparently only attested in dictionaries or glossaries. ΚΠ 1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1048/1 Pygobranchius,..applied by Gray to an order (Pygobranchia) of the Gasteropodophora..; pygobranchious. pygopagous adj. Brit. /pʌɪˈɡɒpəɡəs/ , U.S. /paɪˈɡɑpəɡəs/ Medicine designating conjoined twins of the pygopagus type. ΘΚΠ the world > health and disease > ill health > deformity > [adjective] > Siamese twins bicephalous1803 Siamese1833 thoracopagous1894 xiphopagous1894 pygopagous1895 xiphopagic190. 1895 Teratologia 2 274 Several of the pygopagous twins of whom there are scientific records, survived birth and lived for a number of years. 1902 Brit. Med. Jrnl. 5 Apr. 850 Pygopagous twins..united together in the region of the nates and having each its own pelvis. 1979 Jrnl. Pediatric Surg. 14 554 A set of female pygopagous twins was successfully separated. pygopagus n. Brit. /pʌɪˈɡɒpəɡəs/ , U.S. /paɪˈɡɑpəɡəs/ [ < pygo- comb. form + -pagus comb. form, after French pygopage (see pygopage n.); compare earlier pygopage n.] Medicine a pair of conjoined twins united in the region of the buttocks (usually at the sacrum and coccyx); either of a pair of such twins. ΘΚΠ the world > health and disease > ill health > deformity > [noun] > congenital union > Siamese twins Siamese twins1829 pygopage1844 xiphopagus1844 xiphodyme1861 pygopagus1866 thoracopagus1894 1866 Trans. Med. Soc. N.Y. 224 in Docs. Assembly State N.Y. (89th Session, Doc. No. 133) The symmetrical pygopagus is exceedingly rare. 1903 J. W. Williams Obstetr. xxxix. 680 Ischiopagi and pygopagi, as a rule, call for complicated and difficult manœuvres before delivery can be effected. 1997 Amer. Jrnl. Perinatol. 14 25 Three pairs of female conjoined twins—a xiphoomphalopagus, a pygopagus, and a thoracopagus—were encountered during the past 10 years. 2004 Child's Nerv. Syst. 20 640 A pair of pygopagi had back-to-back fusion of the conus. pygopodine adj. Brit. /pʌɪˈɡɒpədʌɪn/ , /pʌɪˈɡɒpədiːn/ , U.S. /paɪˈɡɑpəˌdaɪn/ , /paɪˈɡɑpəˌdin/ Zoology rare (now disused) = pygopodous adj. ΚΠ 1904 Amer. Naturalist 38 13 Drawings of the bones of pygopodine birds. pygopodous adj. Brit. /pʌɪˈɡɒpədəs/ , U.S. /paɪˈɡɑpədəs/ [after scientific Latin Pygopus (see pygopod n.)] Zoology (now disused) designating aquatic birds having the legs placed far back on the body, including auks, grebes, and divers (formerly sometimes classified together as a suborder Pygopodes). ΘΚΠ the world > animals > birds > parts of or bird defined by > [adjective] > of legs > belonging to group defined by pygopodous1869 homalogonatous1874 pygopod1890 1869 E. Coues in Proc. Acad. Nat. Sci. Philadelphia 207 In Pygopodous families the maximum of backward position of the legs and upright position of the body is attained. 1903 Amer. Naturalist 37 63 It is very likely that Hesperornis used its broad, horizontally flattened tail..as a propeller and rudder to the aquatic locomotion of this ancient pygopodous fowl. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < comb. form1858
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