: a genus (the type of the family Mosasauridae) of large extinct aquatic Cretaceous fish-eating lizards related to the recent monitors but having the limbs modified into swimming paddles

Word History


New Latin, from Latin Mosa the river Meuse (near which the first known species was discovered) + New Latin -saurus

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Dictionary Entries Near Mosasaurus

Cite this Entry

“Mosasaurus.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

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