English▸ noun a large herbivorous mainly bipedal dinosaur of the late Cretaceous period, with jaws flattened like the bill of a duck. Also called duck-billed dinosaur
Family Hadrosauridae, infraorder Ornithopoda, order Ornithischia.
– ORIGIN late 19th century: from modern Latin Hadrosaurus (genus name), from Greek hadros ‘thick, stout’ + sauros ‘lizard’.