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



BrE BrE//ˈhædrəsɔː(r)//
; NAmE NAmE//ˈhædrəsɔːr//
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a large dinosaur with flat jaws like a duck’s Word Origin late 19th cent.: from modern Latin Hadrosaurus (genus name), from Greek hadros ‘thick, stout’ + sauros ‘lizard’.
See the Oxford Advanced American Dictionary entry: hadrosaur