Amnios

Am´ni`os

n.

1.

Same as Amnion.

Thesaurus

Noun

1.

amnios - thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) amnion, amniotic sac amniote - any member of the Amniota mammal, mammalian - any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk fetal membrane - any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus sac - a structure resembling a bag in an animal