Main Entry: dei·non·y·chus

Pronunciation: \(ˌ)dī-ˈnä-ni-kəs\

Function: noun

Etymology: New Latin, from Greek deinos terrifying + -onychos -clawed (from onych-, onyx claw, nail) — more at dire, nail

Date: 1969

: 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