ejection (n.)youdaoicibaDictYouDict[ejection 词源字典]
1560s, from Middle French ejection and directly from Latin eiectionem (nominative eiectio) "a casting out, banishment, exile," noun of action from past participle stem of eicere (see eject). The jet pilot's ejection seat (also ejector seat) is from 1945.[ejection etymology, ejection origin, 英语词源]