hadrosaur
Concise Oxford English Dictionary © 2008 Oxford University Press:
hadrosaur /ˈhadrəsɔː/
▶noun a large herbivorous, mainly bipedal dinosaur with jaws flattened like the bill of a duck.
– origin C19: from mod. L. Hadrosaurus (genus name), from Gk hadros ‘thick, stout’ + sauros ‘lizard’.
'hadrosaur' also found in these Oxford entries:

