heliacal
Americanadjective
Other Word Forms
Etymology
Origin of heliacal
1600–10; < Late Latin hēliac ( us ) (< Greek hēliakós; see heli- 1, -ac) + -al 1
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The dies caniculares, or dog-days, were reckoned to begin twenty days before, and to continue for twenty days after, the heliacal rising of Sirius, the dog-star.
From The Astronomy of Milton's 'Paradise Lost' by Orchard, Thomas Nathaniel
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
According to an extremely ancient belief it was the goddess Hathor Isis-Sothis who caused the inundation of the Nile which, according to the inscriptions, coincided with the heliacal rising of Sirius.
From The Fundamental Principles of Old and New World Civilizations by Nuttall, Zelia
Either the calendar did not originate in Egypt, or it was introduced in 2780 B.C., when again the heliacal rising Sothis fell on the first of Thoth.
From The Egyptian Conception of Immortality by Reisner, George Andrew
On the ceiling of the Memnonium at Thebes the heliacal rising of Sirius is represented under the form and name of Isis.
From Astronomical Curiosities Facts and Fallacies by Gore, J. Ellard
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
