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# coefficient

[koh-uh-fish-uh nt] /ˌkoʊ əˈfɪʃ ənt/
noun
1.
Mathematics. a number or quantity placed (generally) before and multiplying another quantity, as 3 in the expression 3x.
2.
Physics. a number that is constant for a given substance, body, or process under certain specified conditions, serving as a measure of one of its properties:
coefficient of friction.
3.
acting in consort; cooperating.
Origin of coefficient
1655-1665
First recorded in 1655-65, coefficient is from the New Latin word coefficient- (stem of coefficiēns). See co-, efficient
Related forms
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for coefficient
Historical Examples
• You're referring to the necessity for a coefficient of discharge.

Walt Sheldon
• "Clear it ov its coefficient, and we'll thry," says the Pope.

Various
• The coefficient of rolling friction of a railroad train on a track is 0.009.

Willis Eugene Tower
• The rate of expansion per degree is called the coefficient of Expansion.

Willis Eugene Tower
• This might be termed the Recognition, the other the Perception, coefficient.

John Dewey
• An inspection of our text shows that the coefficient must be 0, 1, 2, or 3.

Sylvanus Griswold Morley
• This kind of information we get by calculating what is called the coefficient of heredity.

William E. Kellicott
• That is, the real limits of the value of the coefficient are plus one and minus one.

William E. Kellicott
• Here is a very close relation, but, the sign of the coefficient is negative.

William E. Kellicott
• The coefficient of expansion for normal solutions is 0.00033 per cc.

E. G. Thomssen
British Dictionary definitions for coefficient

## coefficient

/ˌkəʊɪˈfɪʃənt/
noun
1.
(maths)
1. a numerical or constant factor in an algebraic term: the coefficient of the term 3xyz is 3
2. the product of all the factors of a term excluding one or more specified variables: the coefficient of x in 3axyz is 3ayz
2.
(physics) a value that relates one physical quantity to another
Word Origin
C17: from New Latin coefficiēns, from Latin co- together + efficere to effect
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for coefficient
n.

also co-efficient, c.1600, from co- + efficient. Probably influenced by Modern Latin coefficiens, which was used in mathematics in 16c., introduced by French mathematician François Viète (1540-1603). As an adjective from 1660s.

Online Etymology Dictionary, © 2010 Douglas Harper
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coefficient in Medicine

coefficient co·ef·fi·cient (kō'ə-fĭsh'ənt)
n.
The mathematical expression of the amount or degree of any quality possessed by a substance, or of the degree of physical or chemical change normally occurring in that substance under stated conditions.

The American Heritage® Stedman's Medical Dictionary
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coefficient in Science
 coefficient   (kō'ə-fĭsh'ənt)    A number or symbol multiplied with a variable or an unknown quantity in an algebraic term. For example, 4 is the coefficient in the term 4x, and x is the coefficient in x(a + b).A numerical measure of a physical or chemical property that is constant for a system under specified conditions. The speed of light in a vacuum, for example, is a constant.
The American Heritage® Science Dictionary
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### Difficulty index for coefficient

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### Word Value for coefficient

21
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