Augustan (adj.)youdaoicibaDictYouDict[Augustan 词源字典]
1640s, from Latin Augustanus, "pertaining to Augustus (Caesar)," whose reign was connected with "the palmy period of Latin literature" [OED]; hence, "period of purity and refinement in any national literature" (1712).[Augustan etymology, Augustan origin, 英语词源]