Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A small herbivorous ceratopsian dinosaur of the genus Protoceratops of the Cretaceous Period, characterized by a bony frill on the back of the skull and a beaked mouth.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun small horned dinosaur

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin Prōtocerātōps, genus name : Greek prōto-, proto- + Greek keras, kerāt-, horn; see ker- in Indo-European roots + Greek ōps, eye, face; see okw- in Indo-European roots.]

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