viviparous

Etymology

From Latin vīviparus, from vīvus (“alive, life, living”) + pariō (“give birth, produce, bring forth”).

adj

1. (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).
2. (of a plant or plant species) Arising from an embryo that develops from the outset (rather than from a true seed that then germinates).