word-forming element meaning "horn, horn-like part," from Latinized form of Greek keras (genitive keratos) "horn of an animal; horn as a substance," from PIE root *ker- (1) "horn, head."
element used in forming dinosaur names, from Latinized form of Greek sauros "lizard," a word of unknown origin; possibly related to saulos "twisting, wavering."
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Definitions of ceratosaurus
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;
