- (n.) That branch of mathematics which investigates the relations, properties, and measurement of solids, surfaces, lines, and angles; the science which treats of the properties and relations of magnitudes; the science of the relations of space.
- (n.) A treatise on this science.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). geometry. Retrieved September 21, 2026, from http://smartdefine.org/geometry/definitions/2011966 |
| Chicago | Webster's. 2011. "geometry" http://smartdefine.org/geometry/definitions/2011966 (accessed September 21, 2026). |
| Harvard | Webster's 2011, geometry, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/geometry/definitions/2011966>. |
| MLA | Webster's. "geometry" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/geometry/definitions/2011966> |