Definition of triceratops noun from the Oxford Advanced Learner's Dictionary

 

triceratops

 noun
noun
BrE BrE//traɪˈserətɒps//
 
; NAmE NAmE//traɪˈserətɑːps//
 
(pl. triceratops, triceratopses)
 
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a large dinosaur with two large horns and one small horn on its very large head Word Originmodern Latin, from Greek trikeratos ‘three-horned’ + ōps ‘face’.
See the Oxford Advanced American Dictionary entry: triceratops