|  tyrannosaur 
 
 large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations;
 may have been a scavenger rather than an active predator;
 later Cretaceous period in North America
 • Syn:
 tyrannosaurus, Tyrannosaurus rex
 • Hypernyms:
 theropod, theropod dinosaur, bird-footed dinosaur
 • Member Holonyms:
 genus Tyrannosaurus
 
 
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