Definition of deinonychus
: any of a genus (Deinonychus) of small bipedal carnivorous theropod dinosaurs from the Cretaceous having a very large sharp claw on the second digit of both hind feet
Learn More about deinonychus
Britannica.com: Encyclopedia article about "deinonychus"
Seen and Heard
What made you want to look up deinonychus? Please tell us where you read or heard it (including the quote, if possible).