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.
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
The festivals were marked by the periodical return of certain astronomical phenomena, and those heliacal risings to which any mythological ideas were attached, were noted with great care.
From Astronomical Myths Based on Flammarions's History of the Heavens by Blake, John F.
They approximated to the truth in reference to the solar year, by observing the equinoxes and solstices and the heliacal rising of particular stars.
From Beacon Lights of History, Volume 03 Ancient Achievements by Lord, John
The heliacal rising of a constellation is when it comes from under the rays of the sun, and begins to appear before daylight.
From Discourses on Satire and on Epic Poetry by Dryden, John
This is what is technically known as the "acronical rising" of the Pleiades, their rising at sunset; in contrast to their "heliacal rising," their rising just before daybreak, which ushered in the spring time.
From The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture by Maunder, E. Walter (Edward Walter)
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.
