extirpation (n.)youdaoicibaDictgodict[extirpation 词源字典]
early 15c., "removal;" 1520s, "rooting out, eradication," from Latin extirpationem/exstirpationem (nominative extirpatio/exstirpatio), noun of action from past participle stem of extirpare/exstirpare "root out," from ex- "out" (see ex-) + stirps (genitive stirpis) "a root, stock of a tree."[extirpation etymology, extirpation origin, 英语词源]