Any of various herbivorous quadrupedal ornithischian dinosaurs of the group Ceratopsia of the Cretaceous Period, having a beaked mouth, usually a bony frill on the back of the skull, and sometimes horns.
[From New Latin Cerātōpsia, suborder name : Greek keras, kerāt-, horn; see ker-1 in the Appendix of Indo-European roots + Greek ōps, eye, face; see okw- in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.