Definitions

1. adjective

relating to or characteristic of the sothic cycle, the period between two consecutive alignments of the stars Alpha and Beta Monocerotis with the sun at sunrise in the constellation of Cancer

“The ancient Egyptians were skilled astronomers, capable of calculating the sothic cycle with remarkable accuracy.”

2. noun

a period of 1,461 years, or one complete sothic cycle, which is the time it takes for the sun to return to the same position in the sky at sunrise in the constellation of Cancer

“The ancient Egyptian calendar was based on a 365-day year and the sothic cycle, which was used to measure the passage of time.”