conjuration (n.)youdaoicibaDictYouDict[conjuration 词源字典]
late 14c., coniuracioun, "conspiracy" (now obsolete), also "a calling upon something supernatural," from Old French conjuracion "spell, incantation, formula used in exorcism," from Latin coniurationem (nominative coniuratio) "a swearing together, conspiracy," noun of action from coniurare (see conjure).[conjuration etymology, conjuration origin, 英语词源]