Amnion definition

Amnion

Topics Amnion Definition

WordNet

(1) Thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)

WiktionaryText

From for "membrane around a fetus", from Greek "bowl in which the blood of victims was caught", from ame, (bucket)

the innermost membrane of the fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended.