(n.) That point of the orbit of a planet or comet which is nearest to the sun; -- opposed to aphelion.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Perihelium. Retrieved September 27, 2026, from http://smartdefine.org/perihelium/definitions/2043833 |
| Chicago | Webster's. 2011. "Perihelium" http://smartdefine.org/perihelium/definitions/2043833 (accessed September 27, 2026). |
| Harvard | Webster's 2011, Perihelium, Smart Define, viewed 27 September, 2026, <http://smartdefine.org/perihelium/definitions/2043833>. |
| MLA | Webster's. "Perihelium" 27 May 2011. Web. 27 September 2026. <http://smartdefine.org/perihelium/definitions/2043833> |