hadrosaurus

World English Dictionary
hadrosaur or hadrosaurus (ˈhædrəˌsɔː, ˌhædrəˈsɔːrəs)
 
n
Also called: duck-billed dinosaur any one of a large group of bipedal Upper Cretaceous dinosaurs of the genus Anatosaurus, Maiasaura, Edmontosaurus, and related genera: partly aquatic, with a duck-billed skull and webbed feet
 
[C19: from Greek hadros thick, fat + -saur]
 
hadrosaurus or hadrosaurus
 
n
 
[C19: from Greek hadros thick, fat + -saur]

Collins English Dictionary - Complete & Unabridged 10th Edition
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WordNet
hadrosaurus

noun
any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic [syn: hadrosaur
WordNet® 3.0, © 2006 by Princeton University.
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