heliacal
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Related to heliacal: Heliacal setting
he·li·a·cal
(hĭ-lī′ə-kəl)adj.
Of or relating to the sun, especially rising and setting with the sun.
[From Late Latin hēliacus, from Greek hēliakos, from hēlios, sun; see sāwel- in Indo-European roots.]
he·li′a·cal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
he•li•a•cal
(hɪˈlaɪ ə kəl)adj.
pertaining to or occurring near the sun, esp. applied to such risings and settings of a star as most nearly coincide with sunrise or sunset.
he•li′a•cal•ly, adv.
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Adj. | 1. | heliacal - pertaining to or near the sun; especially the first rising of a star after and last setting before its invisibility owing to its conjunction with the sun; "the heliacal rising of the Dog Star"; "the heliacal or Sothic year is determined by the heliacal rising of Sothis (the Egyptian name for the Dog Star)" |
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