资料来源 : pyDict

amnion的复数形

资料来源 : WordNet®

amnion
     n : thin innermost membranous sac enclosing the developing
         embryo of higher vertebrates (reptiles, birds and
         mammals) [syn: {amniotic sac}, {amnios}]
     [also: {amnia} (pl)]

amnia
     See {amnion}