Vi·​vip·​a·​rus | \-p(ə)rəs\

Definition of Viviparus 

: a widely distributed genus (the type of the cosmopolitan family Viviparidae of the suborder Taenioglossa) of freshwater snails that have a turbinate operculate shell which is usually greenish and more or less banded with brown and that are born alive and with a well-developed shell

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History and Etymology for Viviparus

New Latin, from Latin, adjective, viviparous

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