- ovoviviparous⇄adv. ovoviviparously.
- ovoviviparous⇄noun ovoviviparousness.
- ovoviviparous⇄ovoviviparous, adjective.
producing eggs that are hatched within the body of the parent, so that young are born alive but without placental attachment. Certain reptiles and fishes and many invertebrate animals are ovoviviparous.