Parousia (n.)youdaoicibaDictYouDict[Parousia 词源字典]
"Second Coming," a reference to Matt. xxiv:27, 1875, from Greek parousia, literally "presence," from para- (see para- (1)) + ousia "essence," from on, genitive ontos, present participle of einai "to be" (see ion).[Parousia etymology, Parousia origin, 英语词源]