- (n.) A prism whose refracting angle is very nearly 180 degrees.
- (n.) A combination of two short rectangular glass prisms cemented together at their diagonal faces so as to form a cube; -- called also optical cube. It is used in one form of photometer.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). biprism. Retrieved September 25, 2026, from http://smartdefine.org/biprism/definitions/1980471 |
| Chicago | Webster's. 2011. "biprism" http://smartdefine.org/biprism/definitions/1980471 (accessed September 25, 2026). |
| Harvard | Webster's 2011, biprism, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/biprism/definitions/1980471>. |
| MLA | Webster's. "biprism" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/biprism/definitions/1980471> |