Of or pertaining to Sothis, the Egyptian name for the Dog Star; taking its name from the Dog Star; canicular. Sothiac, or Sothic, year (Chronol.), the Egyptian year of 365 days and 6 hours, as distinguished from the Egyptian vague year, which contained 365 days. The Sothic period consists of 1,460 Sothic years, being equal to 1,461 vague years. One of these periods ended...