Topic:mammalmammalian
Synset:amnion amnios
Derivationally Related Form:amnicamnioticamnionic
Part Holonyms:amniote fetal membrane
Hypernyms:sac
Inherited Hypernyms:amnionsaccavitystructurebody partpartthingphysical entityentity
| 单词 | amniotic sac |
| 释义 | Amniotic Sac nnoun.animalthin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals) Topic:mammalmammalian Synset:amnion amnios Derivationally Related Form:amnicamnioticamnionic Part Holonyms:amniote fetal membrane Hypernyms:sac Inherited Hypernyms:amnionsaccavitystructurebody partpartthingphysical entityentity |
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