tracheostomy (n.)youdaoicibaDictYouDict[tracheostomy 词源字典]
1726, from tracheo-, used as a comb. form of trachea + -ostomy "artificial opening," from Modern Latin stoma "opening, orifice," from Greek stoma "mouth" (see stoma).[tracheostomy etymology, tracheostomy origin, 英语词源]