Main Entry: vi·vip·a·rous Pronunciation: vI-'vip-(&-)r&s, v&- Function: adjective : producing living young instead of eggsfrom within the body in the manner of nearly all mammals, many reptiles, and a few fishes —compare LARVIPAROUS, OVIPAROUS, OVOVIVIPAROUS —vi·vip·a·rous·lyadverb