Cer·a·to·sau·rus n.  Paleon. A swift-running bipedal carnivorous American Jurassic dinosaur allied to the European Megalosaurus. The animal was nearly twenty feet in length, and the skull bears a bony short horn between the nostrils on the united nasal bones. See Illustration in Appendix.

 ◄ ►


 ceratosaurus
      n : primitive medium-sized theropod; swift-running bipedal
          carnivorous dinosaur having grasping hands with sharp
          claws and a short horn between the nostrils; Jurassic in
          North America [syn: ceratosaur]