# equation

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## e·qua·tion

(ĭ-kwā′zhən, -shən)
n.
1. The act or process of equating or of being equated.
2. The state of being equal.
3. Mathematics A statement asserting the equality of two expressions, usually written as a linear array of symbols that are separated into left and right sides and joined by an equal sign.
4. Chemistry A representation of a chemical reaction, usually written as a linear array in which the symbols and quantities of the reactants are separated from those of the products by an arrow or a set of opposing arrows.
5. A complex of variable elements or factors: "The world was full of equations ... there must be an answer for everything, if only you knew how to set forth the questions" (Anne Tyler).

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## equation

(ɪˈkweɪʒən; -ʃən)
n
1. (Mathematics) a mathematical statement that two expressions are equal: it is either an identity in which the variables can assume any value, or a conditional equation in which the variables have only certain values (roots)
2. the act of regarding as equal; equating
3. the act of making equal or balanced; equalization
4. a situation, esp one regarded as having a number of conflicting elements: what you want doesn't come into the equation.
5. the state of being equal, equivalent, or equally balanced
6. a situation or problem in which a number of factors need to be considered
7. (Chemistry) See chemical equation
8. astronomy See personal equation
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

## e•qua•tion

(ɪˈkweɪ ʒən, -ʃən)

n.
1. the act of equating or making equal.
2. the state of being equated or equal.
3. equally balanced state; equilibrium.
4. an expression or a proposition, often algebraic, asserting the equality of two quantities.
5. a symbolic representation in chemistry showing the kind and amount of the starting materials and products of a reaction.
[1350–1400; Middle English < Latin]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

## e·qua·tion

(ĭ-kwā′zhən)
1. Mathematics A written statement indicating the equality of two expressions. It consists of a sequence of symbols that is split into left and right sides joined by an equal sign. For example, 2 + 3 + 5 = 10 is an equation.
2. Chemistry A written representation of a chemical reaction, in which the symbols and amounts of the reactants are separated from those of the products by an equal sign, arrow, or a set of opposing arrows. For example, NaOH + HCl = NaCl + H2O is an equation.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 equation - a mathematical statement that two expressions are equalmath, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangementregression equation, regression of y on x - the equation representing the relation between selected values of one variable (x) and observed values of the other (y); it permits the prediction of the most probable values of ylinear equation - a polynomial equation of the first degreequadratic, quadratic equation - an equation in which the highest power of an unknown quantity is a squarebiquadratic equation, biquadratic - an equation of the fourth degreedifferential equation - an equation containing differentials of a functionsimultaneous equations - a set of equations in two or more variables for which there are values that can satisfy all the equations simultaneouslymathematical statement - a statement of a mathematical relationexponential equation - an equation involving exponential functions of a variable 2 equation - a state of being essentially equal or equivalent; equally balanced; "on a par with the best"status, position - the relative position or standing of things or especially persons in a society; "he had the status of a minor"; "the novel attained the status of a classic"; "atheists do not enjoy a favorable position in American life"egalite, egality - social and political equality; "egality represents an extreme leveling of society"tie - equality of score in a contest 3 equation - the act of regarding as equalequatingequalisation, equalization, leveling - the act of making equal or uniform
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

## equation

noun the equation between higher spending and higher taxes
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002

## equation

noun
The state of being equivalent:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations
مُعادَلةمُعادَلَه
rovnice
ligningregnestykke
yhtälö
egyenletkiegyenlítés
jafnaefnajafna

방정식
rovnica
enačba
ekvation
สมการ
phương trình

## equation

[ɪˈkweɪʒən] N
1. (Math) →
to enter (into) the equation (fig) →
fairness did not seem to enter into the equation
2. (= linking) the equation of sth with sthla identificación de algo con algo
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

## equation

[ɪˈkweɪʒən] n
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

## equation

n (Math, fig) → Gleichung f; the equation of religion and moralitydie Gleichsetzung von Religion mit Moralität; to balance the equation between work and leisure; that doesn’t even enter the equation
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

## equation

[ɪˈkweɪʒn] n (Math) →
equations of motion (Phys) →
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

## equate

(iˈkweit) verb
to regard as the same in some way. He equates money with happiness.
eˈquation (-ʒən) noun
1. a statement that two things are equal or the same. xy+xy=2xy is an equation.
2. a formula expressing the action of certain substances on others. 2H2 + O2 = 2 H2O is an equation.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.

## equation

rovnice ligning yhtälö jednadžba 等しくすること 방정식 ekvation สมการ phương trình
Multilingual Translator © HarperCollins Publishers 2009
References in classic literature ?
This equation does not give us the value of the unknown factor but gives us a ratio between two unknowns.
"No, Michel; the difficult part is what Barbicane has done; that is, to get an equation which shall satisfy all the conditions of the problem.
"Very good, electricity and heat are the same thing; but is it possible to substitute the one quantity for the other in the equation for the solution of any problem?
Representing him by the letter n, the Republicans begin to build their equation thus: "Let n = the white man." This, however, appears to give an unsatisfactory solution.
Furthermore, it is admitted that never, never, in a million lifetimes, could Michael have demonstrated a proposition in Euclid or solved a quadratic equation. Yet he was capable of knowing beyond all peradventure of a doubt that three bones are more than two bones, and that ten dogs compose a more redoubtable host than do two dogs.
POLARITY, or action and reaction, we meet in every part of nature; in darkness and light; in heat and cold; in the ebb and flow of waters; in male and female; in the inspiration and expiration of plants and animals; in the equation of quantity and quality in the fluids of the animal body; in the systole and diastole of the heart; in the undulations of fluids, and of sound; in the centrifugal and centripetal gravity; in electricity, galvanism, and chemical affinity.
It was but a question of vanity throughout; and if that were admitted into one side of the equation it should be admitted into the other.
"Oh, I am aware of that," said Madame de Villefort; "but I have a passion for the occult sciences, which speak to the imagination like poetry, and are reducible to figures, like an algebraic equation; but go on, I beg of you; what you say interests me to the greatest degree."
In this case the matter was simplified by Brunton's intelligence being quite first-rate, so that it was unnecessary to make any allowance for the personal equation, as the astronomers have dubbed it.
There is no limit to your heroism; but you forget the human equation in the pluckiest of the plucky.
Time was a negligible factor in the equation of life--it was all the same to Tarzan if he reached the west coast in a month or a year or three years.
Physicists distinguish between macroscopic and microscopic equations: the former determine the visible movements of bodies of ordinary size, the latter the minute occurrences in the smallest parts.

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