- vivipartous (rare)
viviparous (not comparable)
- (of an animal or animal species) Being born alive, as are most mammals, some reptiles, and a few fish (as opposed to being laid as an egg and subsequently hatching, as do most birds and many other species).
- (of a plant or plant species) Arising from an embryo that develops from the outset (rather than from a true seed that then germinates).
- (of an animal): oviparous
of an animal