efflorescence (n.)youdaoicibaDictYouDict[efflorescence 词源字典]
1620s, "a bursting into flower, act of blossoming out," from French efflorescence, from Latin efflorescentem (nominative efflorescens), present participle of efflorescere "to bloom, flourish, blossom" (see effloresce). Sense in chemistry is from 1660s.[efflorescence etymology, efflorescence origin, 英语词源]