Sothic (adj.)youdaoicibaDictYouDict[Sothic 词源字典]
as in Sothic cycle, a period of 1,460 years, 1828, from French Sothique, from Greek Sothis, an Egyptian name of the star Sirius. The Sothic year is determined by the heliacal rising of Sirius.[Sothic etymology, Sothic origin, 英语词源]