ceratopsian n 1: any of several four-footed herbivorous dinosaurs with enormous beaked skulls; of the late Cretaceous in North America and Mongolia [syn: {ceratopsian}, {horned dinosaur}]
ceratopsian \ceratopsian\ n. any of several four-footed herbivorous horned dinosaurs with enormous beaked skulls, of the late Cretaceous in North America and Mongolia. Syn: horned dinosaur. [WordNet 1.5]