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

 

hadrosaur

 noun
noun
BrE BrE//ˈhædrəsɔː(r)//
 
; NAmE NAmE//ˈhædrəsɔːr//
 
 
jump to other results
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