pacification (n.)youdaoicibaDictYouDict[pacification 词源字典]
"a setting at peace," early 15c., from Middle French pacification "act of making peaceful" (15c.), from Latin pacificationem (nominative pacificatio) "a peace-making," noun of action from past participle stem of pacificare "to pacify" (see pacify).[pacification etymology, pacification origin, 英语词源]