chel·o·di·na \ˌkeləˈdīnə\noun Usage: capitalized Etymology: New Latin, probably from chelo- (from Greek chelys tortoise) + -dina (from Greek deinos terrible) — more at chelys, dire : a genus of freshwater turtles of Australia including the long-necked turtle • chel·o·dine\ˈkeləˌdīn, -_də̇n\adjective or noun