n.
Pronunciation: ' m ō -z ə - ˌ so ̇ r
Function: noun
Etymology: New Latin Mosasaurus, from Latin Mosa the river Meuse + Greek sauros lizard
Date: 1841
: any of a family (Mosasauridae) of very large extinct marine fish-eating lizards of the Upper Cretaceous with limbs modified into paddles that are related to the recent monitor lizards