- (n.) A book containing the principles of this science.
- (n.) The science of numbers; the art of computation by figures.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). arithmetic. Retrieved September 22, 2026, from http://smartdefine.org/arithmetic/definitions/1975822 |
| Chicago | Webster's. 2011. "arithmetic" http://smartdefine.org/arithmetic/definitions/1975822 (accessed September 22, 2026). |
| Harvard | Webster's 2011, arithmetic, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/arithmetic/definitions/1975822>. |
| MLA | Webster's. "arithmetic" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/arithmetic/definitions/1975822> |