WordReference Random House Unabridged Dictionary of American English © 2026
cer•a•to•saur
(ser′ə tə sôr′),USA pronunciation n.
- Paleontologya carnivorous, swift-running North American theropod dinosaur of the genus Ceratosaurus and closely related genera, of the Jurassic Period, having a large skull with a short horn between the nostrils and a bony knob in front of each eye, and reaching a length of 20 ft. (6.1 m).
- Neo-Latin Ceratosaurus; see cerato-, -saur
- 1884
'ceratosaur' also found in these entries (note: many are not synonyms or translations):