conclusion (n.)youdaoicibaDictYouDict[conclusion 词源字典]
late 14c., "deduction or conclusion reached by reasoning," from Old French conclusion "conclusion, result, outcome," from Latin conclusionem (nominative conclusio), noun of action from past participle stem of concludere (see conclude). Also, from late 14c. "the end" (usually of speech or writing), "closing passages of a speech or writing."[conclusion etymology, conclusion origin, 英语词源]