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ˌchorio-aˈllantois
ˌchorio-aˈllantois n.
Brit. 
/ˌkɔːrɪəʊəˈlantəʊɪs/
, /ˌkɔːrɪəʊəˈlantəʊɪs/U.S. /ˌkɔrioʊəˈlæntəwəs/
a vascular membrane formed by the union of the chorion and the allantois in birds and reptiles and serving a respiratory function, often used as a medium for the culture of viruses, etc./ˌkɔrioʊəˈlæntəwəs/ΘΚΠ
the world > animals > reptiles > [noun] > parts of
atterc1000
fingera1398
spear1608
pecten1713
supraciliary1838
postocular1856
patagium1857
podotheca1864
pretemporal1866
keeled scale1870
postnasal1871
prenasal1886
supracoracoid1897
hedonic gland1901
guanophore1924
chorio-allantois1933
the world > animals > birds > parts of or bird defined by > [noun] > vascular membrane
chorio-allantois1933
1933 Jrnl. Exper. Zool. 66 193 The development of embryonic rat tissues upon the chick chorio-allantois.
1959 New Biol. 30 88 As in mammals the embryos soon become [in certain viviparous lizards] completely surrounded by membranes. Two of these, the chorion and the allantois, become fused early in development, the product being termed the chorio-allantois.
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as lemmas