cer·a·top·si·an [ sèrrə tópsee ən ](pluralcer·a·top·si·ans) or cer·a·top·sid [ sèrrə tópsid ](pluralcer·a·top·sids)
noun
Definition:
horned plant-eating dinosaur: a four-footed plant-eating dinosaur of the Cretaceous period, with one or more horns projecting from the head and a bony frill extending from the skull over the neck. Suborder Ceratopsia.
[Early 20th century. < modern Latin Ceratopsia< Greek kerat- "horn"]
