Thylacoleo

noun Thy·la·co·leo \ˌthīləˈkōlēˌō\

Definition of Thylacoleo

  1. :  a genus (coextensive with the family Thylacoleontidae) of Pleistocene Australian marsupial mammals having a skull about the size of that of a lion, large tusks, and crushing molars

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 thylacoleo

New Latin, from Greek thylakos sack + Latin leo lion — more at lion


Seen and Heard

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

WORD OF THE DAY

to cast off or become cast off

Get Word of the Day daily email!