- (a.) Alternative of Dioptrical.
- (n.) A dioptre. See Dioptre.
- (a.) Of or pertaining to the dioptre or to the metric system of numbering glasses.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). dioptric. Retrieved September 24, 2026, from http://smartdefine.org/dioptric/definitions/1997848 |
| Chicago | Webster's. 2011. "dioptric" http://smartdefine.org/dioptric/definitions/1997848 (accessed September 24, 2026). |
| Harvard | Webster's 2011, dioptric, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/dioptric/definitions/1997848>. |
| MLA | Webster's. "dioptric" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/dioptric/definitions/1997848> |