Zool. and Bot. [f. L. vīvipar-us (see next) + -ITY.] The condition or character of being viviparous.
1864. Spencer, Princ. Biol., I. 211. This homogenesis … in reptiles and fishes … is always essentially oviparous, though there are cases … in which viviparity is simulated.
1888. Rolleston & Jackson, Anim. Life, 358. Instances of viviparity occur among Lacertilia, Ophidia [etc.].
