heliacal

Example Sentences

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He must mean either the heliacal or achronical rising of that sign.

From Discourses on Satire and on Epic Poetry by Dryden, John

Sothic, sō′thik, adj. of or pertaining to the dog-star Sothis or Sirius.—Sothic cycle, or period, a period of 1460 years; Sothic year, the ancient Egyptian fixed year, according to the heliacal rising of Sirius.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

Dog-days, the name applied by the ancients to a period of about forty days, the hottest season of the year, at the time of the heliacal rising of Sirius, the dog-star.

From The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde by Various

This period, measured thus by the heliacal rising of Sothis, is spoken of as the Sothic cycle.

From A History of Science — Volume 1 by Williams, Edward Huntington

It seems to have been considered of great importance in ancient Egypt, as its heliacal rising announced that of Sirius, which heralded the annual rising of the Nile.

From Astronomical Curiosities Facts and Fallacies by Gore, J. Ellard