xenelasia (n.)youdaoicibaDictYouDict[xenelasia 词源字典]
"prevention of aliens from settling in Sparta," Greek, literally "expulsion of foreigners," from xenelatein "to expel foreigners," from xenos "stranger" (see xeno-) + elatos, verbal adjective of elaunein "drive, drive away, beat out."[xenelasia etymology, xenelasia origin, 英语词源]