CHORIOALLANTOIS

chorioallantois, chorioallantoic membrane

(noun) the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois

Source: WordNet® 3.1

Noun

chorioallantois (plural chorioallantoises)

(anatomy) The vascular extraembryonic membrane, formed by the fusion of the allantois and the chorion, that makes up the placenta in most mammals; the chorioallantoic membrane

Source: Wiktionary

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