Sothic cycle

noun

: a period of 1460 Sothic years in the ancient Egyptian calendar being the time required for the beginning of the vague year of 365 days to return to its original place in relation to the sun after retrogressing through all the seasons

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now