amnion
1 synonym for amnion, grouped by meaning and by how common each one is.
Noun — The innermost membrane around a developing reptile, bird or mammal, forming the fluid-filled sac it grows inside.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
amnios
Etymology
From Latin amnion, meaning ‘membrane around a fetus’, from Ancient Greek ἀμνίον (amníon).
Full origin of amnion →