noun \i-ˈkwā-zhən also -shən\

mathematics : a statement that two expressions are equal (such as 8 + 3 = 11 or 2x – 3 = 7)

: a complicated situation or issue

: the act of regarding two things as the same : the act of equating things

Full Definition of EQUATION

a :  the act or process of equating
b (1) :  an element affecting a process :  factor
(2) :  a complex of variable factors
c :  a state of being equated; specifically :  a state of close association or identification <bring governmental enterprises and payment for them into immediate equation — R. G. Tugwell>
a :  a usually formal statement of the equality or equivalence of mathematical or logical expressions
b :  an expression representing a chemical reaction quantitatively by means of chemical symbols

Examples of EQUATION

  1. the equation of material wealth with happiness

First Known Use of EQUATION

14th century

Other Mathematics and Statistics Terms

abscissa, denominator, divisor, equilateral, exponent, hypotenuse, logarithm, oblique, radii, rhomb


noun \i-ˈkwā-zhən also -shən\   (Medical Dictionary)

Medical Definition of EQUATION

: an expression representing a chemical reaction quantitatively by means of chemical symbols


noun    (Concise Encyclopedia)

Statement of equality between two expressions consisting of variables and/or numbers. In essence, equations are questions, and the development of mathematics has been driven by attempts to find answers to those questions in a systematic way. Equations vary in complexity from simple algebraic equations (involving only addition or multiplication) to differential equations, exponential equations (involving exponential expressions), and integral equations. They are used to express many of the laws of physics. See also system of equations.


Next Word in the Dictionary: equational
Previous Word in the Dictionary: equated date
All Words Near: equation

Seen & Heard

What made you want to look up equation? Please tell us where you read or heard it (including the quote, if possible).