# equation

[ih-kwey-zhuh n, -shuh n]

### noun

the act of equating or making equal; equalization: the symbolic equation of darkness with death.

equally balanced state; equilibrium.

Mathematics. an expression or a proposition, often algebraic, asserting the equality of two quantities.

Also called chemical equation. Chemistry. a symbolic representation showing the kind and amount of the starting materials and products of a reaction.

## RELATED CONTENT

## Nearby words

- equanimity,
- equanimous,
- equanimously,
- equant,
- equate,
- equation division,
- equation movement,
- equation of motion,
- equation of state,
- equation of time

## Origin of equation

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

## chemical equation

### noun

## equation

### noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## equation

late 14c., a term in astrology; meaning "action of making equal" is from 1650s; mathematical sense is from 1560s, on notion of equalizing the expressions; from Latin aequationem (nominative aequatio) "an equal distribution, community," from past participle stem of aequare (see equal (adj.)). Chemistry sense is from 1807.

Online Etymology Dictionary, © 2010 Douglas Harper

## equation

[ĭ-kwā′zhən]

### n.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

## equation

[ĭ-kwā′zhən]

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## equation

An expression of equality between two formulas in mathematics. The two formulas are written with an equal sign between them: 2 + 2 = 4 is an equation, as is E = mc2.

The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.