Word
fetal membrane, n.
any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus
<noun.body>
fetal membrane
semantic pointers
part meronym
amnion, amniotic sac, amnios
chorion
hyponym
allantois
caul, veil, embryonic membrane
umbilical cord, umbilical
hypernym
membrane, tissue layer