Ceratopsidae
plural noun
Cer·a·top·si·dae
\ˌserəˈtäpsəˌdē\
Definition of Ceratopsidae
: a large family of American dinosaurs (suborder Ceratopsia) that includes Triceratops
From the M-W Editors
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Origin and Etymology of ceratopsidae
New Latin, from Ceratops, type genus + -idae
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