- any of several extinct carnivorous marine lizards from the Cretaceous Period, having the limbs modified into broad, webbed paddles.
Origin of mosasaur
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any of various extinct Cretaceous giant marine lizards of the genus Mosasaurus and related genera, typically having paddle-like limbs
Word Origin for mosasaur
C18: from Latin Mosa the river Meuse (near which remains were first found) + -saur
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- Any of various medium-sized to large extinct aquatic lizards of the family Mosasauridae of the Cretaceous Period, having modified limbs that served as paddles for swimming. Some species reached lengths of over 15 meters (50 feet).
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