mosasaur

play
noun mo·sa·saur \ˈmō-zə-ˌsȯr\

Definition of mosasaur

  1. :  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

Recent Examples of mosasaur from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mosasaur'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of mosasaur

New Latin Mosasaurus, from Latin Mosa the river Meuse + Greek sauros lizard


Learn More about mosasaur


Seen and Heard

What made you want to look up mosasaur? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

lacking social experience or grace

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!