fetal membrane

Từ điển Oxford Learners Wordfinder Dictionary

noun

any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus
• Hypernyms:
membrane, tissue layer
• Hyponyms:
allantois, caul, veil, embryonic membrane, umbilical cord, umbilical
• Part Meronyms:
amnion, amniotic sac, amnios, chorion