Home › Words › C › chelonianchelonian/kɪˈləʊ.ni.ən/chelonian means of, relating to, or belonging to the order Chelonia (Testudines), which includes the turtles and tortoises.chelonian is pronounced /kɪˈləʊ.ni.ən/.EtymologyChelonia + -anadjOf, relating to, or belonging to the order Chelonia (Testudines), which includes the turtles and tortoises.nounA reptile of the order Chelonia (Testudines).Definitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.chelonid 75% match — Any member of the family Cheloniidae of sea turtles. vs chelonian →chelonology 73% match — Study of chelonians or tortoises. vs chelonian →chelonioid 73% match — Any sea turtle of the superfamily Chelonioidea vs chelonian →cheloniid 72% match — Any sea turtle in the family Cheloniidae. vs chelonian →chelydrid 69% match — Any turtle in the family Chelydridae. vs chelonian →chelid 69% match — Any turtle in the family Chelidae. vs chelonian →testudinoid 67% match — Any turtle of the superfamily Testudinoidea. vs chelonian →testudineous 67% match — Characteristic of a tortoise, or the shell of a tortoise. vs chelonian →