sothic
Definition
Adjective - Relating to the star Sirius: "Sothic" refers specifically to the star Sirius (also known as the Dog Star), particularly in the context of ancient Egyptian astronomy and chronology. It is used to describe the heliacal rising of Sirius or the cycles based on it.
Usage Examples
- (The cycle based on the star Sirius.)
- (Dates calculated from the heliacal rising of Sirius.)
Advanced Usage
- "Sothic year": the year measured by the heliacal rising of Sirius, approximately 365.25 days.
- The sothic year was slightly longer than the Egyptian civil year, causing a gradual shift in the calendar. (The astronomical year based on Sirius.)
- "Sothic period" or "Sothic cycle": a cycle of 1,460 sothic years (approximately 1,461 civil years), after which the heliacal rising of Sirius returns to the same day in the civil calendar.
- The sothic cycle was a key tool for Egyptian timekeeping. (The 1,460-year cycle.)
Variants and Related Words
- Sothis (proper noun): the ancient Greek and Egyptian name for the star Sirius, often personified as a goddess.
- The rising of Sothis marked the beginning of the Nile flood. (The star Sirius in its cultural role.)
- Sothiac (adjective): a less common variant meaning the same as "sothic."
- The sothiac calendar was based on Sirius. (Relating to Sirius.)
Synonyms
- Sirian: relating to the star Sirius.
- The Sirian cycle is another term for the sothic cycle. (Direct synonym in astronomical contexts.)
Related Idioms
- There are no common idioms using "sothic" due to its highly specialized, technical nature.
Notes on Usage
- "Sothic" is almost exclusively used in academic or historical discussions of ancient Egyptian astronomy, chronology, and calendar systems. It is not used in everyday language.