adjective Zoology.
producing eggs that are hatched within the body, so that the young are born alive but without placental attachment, as certain reptiles or fishes.

1795–1805; ov(i)- + -o- + viviparous

ovoviviparism, ovoviviparity [oh-voh-vahy-vuh-par-i-tee] , ovoviviparousness, noun
ovoviviparously, adverb
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World English Dictionary
ovoviviparous (ˌəʊvəʊvaɪˈvɪpərəs)
oviparous Compare viviparous (of certain reptiles, fishes, etc) producing eggs that hatch within the body of the mother

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1801, from ovum + viviparous.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
ovoviviparous  [%PREMIUM_LINK%]     (ō'vō-vī-vĭp'ər-əs)  Pronunciation Key 
Producing eggs that hatch within the female's body. Some fish and reptiles are ovoviviparous. Compare oviparous, viviparous.

The American Heritage® Science Dictionary
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