amniotic sac
n.
amnion
Words nearby amniotic sac
amniote,
amniotic,
amniotic cavity,
amniotic fluid,
amniotic fold,
amniotic sac,
amniotome,
amniotomy,
amobarbital,
amoeba,
amoebaean
Scientific definitions for amniotic sac
amniotic sac
See amnion.
Cultural definitions for amniotic sac
amniotic sac
A two-layered membrane that surrounds the embryo or fetus in the uterus. The amniotic sac is filled with fluid in which the embryo or fetus is suspended. (See reproductive systems.)