(n.) That point of a planet's or comet's orbit which is most distant from the sun, the opposite point being the perihelion.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). aphelion. Retrieved September 28, 2026, from http://smartdefine.org/aphelion/definitions/1974799 |
| Chicago | Webster's. 2011. "aphelion" http://smartdefine.org/aphelion/definitions/1974799 (accessed September 28, 2026). |
| Harvard | Webster's 2011, aphelion, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/aphelion/definitions/1974799>. |
| MLA | Webster's. "aphelion" 27 May 2011. Web. 28 September 2026. <http://smartdefine.org/aphelion/definitions/1974799> |