We found 2 definitions of corythosaur from 2 different sources.
NounPlural: corythosaurs |
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corythosaur - duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet | ||
corythosaurus | ||
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 |