from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, relating to, or deriving from the name of Sothis.
- adj. Being the ancient Egyptian calendar year, consisting of 365 1/4 days.
- adj. Being a cycle consisting of 1,460 years of 365 days in the ancient Egyptian calendar.
from The Century Dictionary and Cyclopedia
- Of or pertaining to the dogstar, Sothis.
From Greek Sōthis, the star Sirius; see Sothis.(American Heritage® Dictionary of the English Language, Fourth Edition)