An Etymological Dictionary of Astronomy and Astrophysics

The Egyptian year of 365 days and 6 hours, as distinguished from them Egyptian vague year, which contained 365 days.

Etymology (EN): From Fr. sothique, from Gk. Sothis, an Egyptian name of Sirius; → year.

Etymology (PE): Tištari, of or pertaining to Tištar→ serius; sâl, → year.