Viviparity

Viviparity literally means "giving live birth", from the Latin vivus ("living") and parere ("to beget"). The term is in use both in zoology and in botany as a term for certain classes of modes of reproduction, though it has different meanings in the two contexts.
The adjective viviparous is derived from "viviparity" and describes both the various modes of reproduction and the organisms that reproduce in any such mode.