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Showing results for heliacal. Search instead for heliaea.
Synonyms

heliacal

American  
[hi-lahy-uh-kuhl] / hɪˈlaɪ ə kəl /
Also heliac

adjective

Astronomy.
  1. pertaining to or occurring near the sun, especially applied to such risings and settings of a star as are most nearly coincident with those of the sun while yet visible.


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.

See Examples For:

Swart star: the Dogstar, called swarthy because its heliacal rising in ancient times occurred soon after mid-summer. moist vows: either tearful prayers, or prayers for one at sea.

From The Golden Treasury Of the Best Songs and Lyrical Poems in the English Language by Palgrave, Francis Turner

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)

In that connection there are three kinds of them, cosmical, achronical, and heliacal, important to be distinguished by all who would understand this ancient learning.

From Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry by Pike, Albert

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

The more precise fixing of new year's day was accomplished through observation of the time of the so-called heliacal rising of the dog-star, Sirius, which bore the Egyptian name Sothis.

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

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