The line drawn through a focus of a conic section parallel to the directrix and terminated both ways by the curve. It is the parameter of the principal axis. See Focus, and Parameter.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). latus rectum. Retrieved September 20, 2026, from http://smartdefine.org/latus_rectum/definitions/2026864 |
| Chicago | Webster's. 2011. "latus rectum" http://smartdefine.org/latus_rectum/definitions/2026864 (accessed September 20, 2026). |
| Harvard | Webster's 2011, latus rectum, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/latus_rectum/definitions/2026864>. |
| MLA | Webster's. "latus rectum" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/latus_rectum/definitions/2026864> |