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[From New Latin Hadrosaurus, genus name; see hadrosaurus.]
(Palaeontology) 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. Also called: duck-billed dinosaur
[C19: from Greek hadros thick, fat + -saur]
any chiefly bipedal herbivorous dinosaur of the family Hadrosauridae, of the Cretaceous Period, having a broad toothless beak.Also called duck-billed dinosaur.
Any of various medium-sized to large plant-eating dinosaurs of the Cretaceous Period that had a duck-like bill, hoofed feet, and many series of rough grinding teeth. The hadrosaurs were the last group of ornithopod dinosaurs. Also called duck-billed dinosaur.
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|Noun||1.||hadrosaur - any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic|
anatotitan - one of the largest and most famous duck-billed dinosaurs
corythosaur, corythosaurus - duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet
edmontosaurus - duck-billed dinosaur from Canada found as a fossilized mummy with skin