— chorioallantoic /-al'euhn toh"ik/ , adj.
/kawr'ee oh euh lan"toh is, -toys, kohr'-/ , n. Embryol., Zool.
a vascular, extraembryonic membrane of birds, reptiles, and certain mammals, formed by the fusion of the wall of the chorion with the wall of the allantois. Also called chorioallantoic membrane .
[ 1930-35 ]