triceratops

This term refers specifically to a genus of ceratopsid dinosaur. It carries a strong association with paleontology and natural history museums, evoking images of prehistoric landscapes and fossilized remains. The word is used almost exclusively in scientific or educational contexts to describe this specific creature.

Grammatically, the word ends in s but functions as a singular count noun. Because the s is part of the root word rather than a plural marker, the plural is formed by adding another s, resulting in triceratopses. This is a common point of confusion for speakers who mistake the root ending for a plural suffix.