/ser'euh top"see euhn/ , n.
any of several four-footed, herbivorous dinosaurs of the suborder Ceratopsia, of the late Cretaceous Period, having an enlarged skull with a beak, a large perforated frill at the back, and, in some species, one or three horns. Also called horned dinosaur .
[ Ceratopsi ( a ) (see CERAT-, -OPSIS, -IA) + -AN ]