- producing eggs that are hatched within the body, so that the young are born alive but without placental attachment, as certain reptiles or fishes.
- (of certain reptiles, fishes, etc) producing eggs that hatch within the body of the motherCompare oviparous, viviparous (def. 1)
adj.1801, from comb. form of ovum + viviparous.
- Producing eggs that hatch within the female’s body. Some fish and reptiles are ovoviviparous. Compare oviparous viviparous.