(a.) Having two or more parts of different curvatures, so combined as to remove spherical aberration; -- said of a lens.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). aplanatic. Retrieved September 21, 2026, from http://smartdefine.org/aplanatic/definitions/1974872 |
| Chicago | Webster's. 2011. "aplanatic" http://smartdefine.org/aplanatic/definitions/1974872 (accessed September 21, 2026). |
| Harvard | Webster's 2011, aplanatic, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/aplanatic/definitions/1974872>. |
| MLA | Webster's. "aplanatic" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/aplanatic/definitions/1974872> |