benediction (n.)youdaoicibaDictYouDict[benediction 词源字典]
c. 1400, from Latin benedictionem (nominative benedictio), noun of action from bene dicere "to speak well of, bless," from bene "well" (see bene-) + dicere "to speak" (see diction). The oldest sense in English is of grace before meat. The older French form, beneiçon passed into Middle English as benison.[benediction etymology, benediction origin, 英语词源]