Definition of tyrannosaur noun from the Oxford Advanced American Dictionary

 

tyrannosaur

 noun
noun
NAmE//təˈrænəˌsɔr//
 
, NAmE//taɪˈrænəˌsɔr//
 
(also tyrannosaurus
NAmE//təˌrænəˈsɔrəs//
 
)
 
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a very large dinosaur that stood on two legs and that had large powerful jaws and two short front legs
See the Oxford Advanced Learner's Dictionary entry: tyrannosaur