advent (n.)youdaoicibaDictYouDict[advent 词源字典]
"important arrival," 1742, an extended sense of Advent "season before Christmas" (Old English), from Latin adventus "a coming, approach, arrival," in Church Latin "the coming of the Savior," from past participle stem of advenire "arrive, come to," from ad- "to" (see ad-) + venire "to come" (see venue). In English, also sometimes extended to the Pentecost.[advent etymology, advent origin, 英语词源]