Definition of triceratops noun from the Oxford Advanced American Dictionary

 

triceratops

 noun
noun
NAmE//traɪˈsɛrəˌtɑps//
 
(pl. triceratops or triceratopses)
 
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a large dinosaur with two large horns and one small horn on its very large head
See the Oxford Advanced Learner's Dictionary entry: triceratops