| English noun: chorion | |||
| 1. | chorion (animal) the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals) | ||
| Broader (hypernym) | sac | ||
| Part holonym | chorionic villus | ||
| Part meronym | amniote, fetal membrane | ||
| Domain category | mammal, mammalian | ||