PROTOCERATOPS Meaning of PROTOCERATOPS in English [ ˌprəʊtə(ʊ)'sɛrətɒps ]■ noun a small quadrupedal dinosaur of the late Cretaceous period, having a bony frill above the neck and probably ancestral to triceratops. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004