(n.) An exceedingly faint roundish or somewhat oblong nebulous light near the ecliptic and opposite the sun, best seen during September and October, when in the constellations Sagittarius and Pisces. Its cause is not yet understood. Called also Gegenschein.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). counterglow. Retrieved September 23, 2026, from http://smartdefine.org/counterglow/definitions/1992233 |
| Chicago | Webster's. 2011. "counterglow" http://smartdefine.org/counterglow/definitions/1992233 (accessed September 23, 2026). |
| Harvard | Webster's 2011, counterglow, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/counterglow/definitions/1992233>. |
| MLA | Webster's. "counterglow" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/counterglow/definitions/1992233> |