coelomate (n.)youdaoicibaDictYouDict[coelomate 词源字典]
1883, from Coelomata (1877), from Modern Latin neuter plural of coelomatus, from Greek koilomat- "hollow, cavity," from PIE root *kel- (2) "to cover, conceal" (see cell).[coelomate etymology, coelomate origin, 英语词源]