(a.) Free from chromatic and spherical aberration; -- said especially of a lens in which rays of three or more colors are brought to the same focus, the degree of achromatism thus obtained being more complete than where two rays only are thus focused, as in the ordinary achromatic objective.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). apochromatic. Retrieved September 21, 2026, from http://smartdefine.org/apochromatic/definitions/1974891 |
| Chicago | Webster's. 2011. "apochromatic" http://smartdefine.org/apochromatic/definitions/1974891 (accessed September 21, 2026). |
| Harvard | Webster's 2011, apochromatic, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/apochromatic/definitions/1974891>. |
| MLA | Webster's. "apochromatic" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/apochromatic/definitions/1974891> |