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|Noun||1.||trachodon - large duck-billed dinosaur of the Cretaceous period|
duck-billed dinosaur, hadrosaur, hadrosaurus - any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
genus Trachodon - a reptile genus of the suborder Euronithopoda
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