(a.) Emerging from the light of the sun or passing into it; rising or setting at the same or nearly the same, time as the sun.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). heliacal. Retrieved September 25, 2026, from http://smartdefine.org/heliacal/definitions/2015676 |
| Chicago | Webster's. 2011. "heliacal" http://smartdefine.org/heliacal/definitions/2015676 (accessed September 25, 2026). |
| Harvard | Webster's 2011, heliacal, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/heliacal/definitions/2015676>. |
| MLA | Webster's. "heliacal" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/heliacal/definitions/2015676> |