immortality (n.)youdaoicibaDictYouDict[immortality 词源字典]
mid-14c., "deathlessness," from Old French immortalité (13c.) and directly from Latin immortalitatem (nominative immortalitas) "deathlessness, endless life," from immortalis (see immortal). Sense of "everlasting fame" is from 1530s.[immortality etymology, immortality origin, 英语词源]