n. [ Gr. &unr_; the membrane round the fetus, dim. of &unr_; lamb. ] (Anat.) A thin membrane surrounding the embryos of mammals, birds, and reptiles. [ 1913 Webster ]
n. [ Gr. &unr_; the membrane round the fetus, dim. of &unr_; lamb. ] (Anat.) A thin membrane surrounding the embryos of mammals, birds, and reptiles. [ 1913 Webster ]