Exogyra

noun Ex·o·gy·ra \ˌeksəˈjīrə\

Definition of Exogyra

  1. :  a genus of Upper Jurassic and Cretaceous bivalve mollusks that have thick shells and spirally twisted beak and are related to the true oysters

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of exogyra

New Latin, from exo- + -gyra (from Greek gyros ring, circle, from gyros round) — more at cower


Seen and Heard

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

WORD OF THE DAY

a rounded knoll or a ridge of ice

Get Word of the Day daily email!