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Comprehensive
Dictionary Suite
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theropod any dinosaur of the suborder Theropoda, such as Tyrannosaurus and Velociraptor, characterized by hollow bones and three-toed limbs, usually possessing short forelimbs and walking on two legs.
T. rex shortened form of "Tyrannosaurus rex," a large carnivorous North American dinosaur of the Cretaceous period that had small forelimbs and walked on its hind legs; tyrannosaur.
Tyrannosaur a large carnivorous North American dinosaur of the Cretaceous period that had small forelimbs and walked on its hind legs; Tyrannosaurus rex.