- (n.) A form the planes of which are parallel to the vertical axis. See Form, n., 13.
- (n.) A solid whose bases or ends are any similar, equal, and parallel plane figures, and whose sides are parallelograms.
- (n.) A transparent body, with usually three rectangular plane faces or sides, and two equal and parallel triangular ends or bases; -- used in experiments on refraction, dispersion, etc.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). prism. Retrieved September 21, 2026, from http://smartdefine.org/prism/definitions/2049303 |
| Chicago | Webster's. 2011. "prism" http://smartdefine.org/prism/definitions/2049303 (accessed September 21, 2026). |
| Harvard | Webster's 2011, prism, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/prism/definitions/2049303>. |
| MLA | Webster's. "prism" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/prism/definitions/2049303> |