First Known Use: 1909
Dictionary
ceratopsian
noun cer·a·top·sian \ˌsər-ə-ˈtäp-sē-ən\
Definition of CERATOPSIAN
: any of a suborder (Ceratopsia) of ornithischian dinosaurs of the Late Cretaceous having horns, a sharp horny beak, and a bony frill projecting backward from the skull
— ceratopsian adjective
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