ceratopsian adjective 1noun 1forms 1 adjective1 •Of or belonging to the Ceratopsia suborder of dinosaurs.Triceratops is a ceratopsian dinosaur.One common ceratopsian feature is a frill extending from the back of the skull. noun1 •Any member of this suborderBipedal hadrosaurs, great hulking lambeosaurs, certain rhino-like ceratopsians and relatives of the velociraptors - all large and probably able swimmers - had the greatest success. — 2018 formsceratopsians
