1911 Encyclopædia Britannica/Heliacal
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| ←Helgesen, Povl | 1911 Encyclopædia Britannica, Volume 13 Heliacal |
Heliand→ |
| See also Heliacal rising and Heliacal year on Wikipedia, and our 1911 Encyclopædia Britannica disclaimer. |
HELIACAL, relating to the sun (ἥλιος), a term applied in the ancient astronomy to the first rising of a star which could be seen after it emerged from the rays of the sun, or the last setting that could be seen before it was lost from sight by proximity to the sun.
