/ English Dictionary |
AMNIOTIC SAC
Pronunciation (US): | (GB): |
I. (noun)
Sense 1
Meaning:
Thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)
Synonyms:
Classified under:
Hypernyms ("amniotic sac" is a kind of...):
sac (a structure resembling a bag in an animal)
Domain category:
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)
Holonyms ("amniotic sac" is a part of...):
amniote (any member of the Amniota)
fetal membrane (any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus)