Hadrosaurus
Pronunciation : Had`ro*sau"rus
Part of Speech : n.
Etymology : [NL., fr. Gr. "adro`s thick + say^ros lizard.] (Paleon.)
Definition : Defn: An American herbivorous dinosaur of great size, allied to the iguanodon. It is found in the Cretaceous formation.
Source : Webster's Unabridged Dictionary, 1913