- (n.) A making equal; equal division; equality; equilibrium.
- (n.) An expression of the condition of equality between two algebraic quantities or sets of quantities, the sign = being placed between them; as, a binomial equation; a quadratic equation; an algebraic equation; a transcendental equation; an exponential equation; a logarithmic equation; a differential equation, etc.
- (n.) A quantity to be applied in computing the mean place or other element of a celestial body; that is, any one of the several quantities to be added to or taken from, its position as calculated on the hypothesis of a mean uniform motion, in order to find its true position as resulting from its actual and unequal motion.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). equation. Retrieved September 20, 2026, from http://smartdefine.org/equation/definitions/2004384 |
| Chicago | Webster's. 2011. "equation" http://smartdefine.org/equation/definitions/2004384 (accessed September 20, 2026). |
| Harvard | Webster's 2011, equation, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/equation/definitions/2004384>. |
| MLA | Webster's. "equation" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/equation/definitions/2004384> |