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ceratosaur

American  
[ser-uh-tuh-sawr] / ˈsɛr ə təˌsɔr /

noun

  1. a 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 feet (6.1 meters).


Etymology

Origin of ceratosaur

First recorded in 1884; from New Latin Ceratosaurus; cerato-, -saur