plural noun Bron·to·the·ri·idae \ˌbräntōthəˈrīəˌdē\

Definition of Brontotheriidae

  1. :  a large family of extinct Eocene and Oligocene mammals (order Perissodactyla) that were widely distributed in the northern hemisphere and included the titanotheres and a number of related animals

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 brontotheriidae

New Latin, from Brontotherium, type genus + -idae

Seen and Heard

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


to cast off or become cast off

Get Word of the Day daily email!