noun
- Apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). aphelion. Retrieved September 21, 2026, from http://smartdefine.org/aphelion/definitions/1224043 |
| Chicago | WordNet. 2010. "aphelion" http://smartdefine.org/aphelion/definitions/1224043 (accessed September 21, 2026). |
| Harvard | WordNet 2010, aphelion, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/aphelion/definitions/1224043>. |
| MLA | WordNet. "aphelion" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/aphelion/definitions/1224043> |