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ENGLISH · A WORD WITH POSSIBILITIES

heliacal.

Of or relating to the Sun, especially rising and setting with the sun.

8 characters3 syllables approx.English language

Meaning & usage

adj/hɪˈlaɪ.ə.kəl/US
  1. Of or relating to the Sun, especially rising and setting with the sun.

    rare
  2. Of or relating to the rising of a star when it first becomes visible just before sunrise in the eastern sky, having previously been made invisible by sunlight, or the analogous situation of its setting just after sunset.

Where this word comes from

From Ancient Greek ἡλιακός (hēliakós, “of the sun”) + -al. Appears in English first in the 16th century.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.