Definition of Troodon
: a genus of relatively small North American, carnivorous, ornithopod dinosaurs (family Troodontidae) of the late Cretaceous having serrated teeth, sickle-shaped claws, long, slender hind legs and a large brain and reaching a length of 6 to 8 feet (1.8 to 2.4 meters)
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 troodon
New Latin, from tro- (probably from Greek trōgein to gnaw) + -odon — more at terse
First Known Use: 1892
Seen and Heard
What made you want to look up Troodon? Please tell us where you read or heard it (including the quote, if possible).