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单词 heterocoelous
释义

> as lemmas

ˌheteroˈcoelous
ˌheteroˈcoelous adj.
Brit. /ˌhɛt(ə)rə(ʊ)ˈsiːləs/
,
U.S. /ˌhɛdəroʊˈsiləs/
,
/ˌhɛdərəˈsiləs/
[Greek κοῖλος hollow] Zoology applied to vertebrae in which the articular facets are saddle-shaped, as in certain birds.
ΘΚΠ
the world > animals > birds > bones > [adjective] > of vertebrae
heterocoelous1884
sacrarial1890
synsacral1903
the world > animals > animal body > general parts > constituent materials > [adjective] > vertebrate > having saddle-shaped joints
heterocoelous1884
1884 E. Coues Key to N. Amer. Birds (ed. 2) 138 Both ends of each vertebra are saddle-shaped;..a condition which may be called heterocœlous.
1897 T. J. Parker & W. A. Haswell Text-bk. Zool. II. 358 The centrum in sagittal section appears opisthocœlous, in horizontal section procœlous. This peculiar form of vertebra is distinguished as heterocœlous.
1933 H. F. Gadow Evol. Vertebral Column xxxv. 311 The embryonic vertebrae of all Birds are at first amphicoelous, then they change through opisthocoelous into the heterocoelous or saddle-shaped type, which..represents the highest stage of interaxial joint, allowing of most excursion.
extracted from hetero-comb. form
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as lemmas
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