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# approximation

[uh-prok-suh-mey-shuh n] /əˌprɒk səˈmeɪ ʃən/
noun
1.
a guess or estimate:
Ninety-three million miles is an approximation of the distance of the earth from the sun.
2.
nearness in space, position, degree, or relation; proximity; closeness.
3.
Mathematics, Physics. a result that is not necessarily exact, but is within the limits of accuracy required for a given purpose.
Origin
late Middle English
1400-1450
1400-50; late Middle English approximacioun (< Middle French) < Medieval Latin approximātiōn-, stem of approximātiō. See approximate, -ion
Related forms
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for approximations

## approximation

/əˌprɒksɪˈmeɪʃən/
noun
1.
the process or result of making a rough calculation, estimate, or guess: he based his conclusion on his own approximation of the fuel consumption
2.
an imprecise or unreliable record or version: an approximation of what really happened
3.
(maths) an inexact number, relationship, or theory that is sufficiently accurate for a specific purpose
4.
(maths)
1. an estimate of the value of some quantity to a desired degree of accuracy
2. an expression in simpler terms than a given expression which approximates to it
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for approximations

## approximation

n.

early 15c., "act of coming near or close," noun of action from approximate (v.). Meaning "result of approximating" is from 1650s.

Online Etymology Dictionary, © 2010 Douglas Harper
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approximations in Medicine

approximation ap·prox·i·ma·tion (ə-prŏk'sə-mā'shən)
n.
Bringing tissue edges into desired apposition for suturing.

The American Heritage® Stedman's Medical Dictionary
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### Difficulty index for approximation

Few English speakers likely know this word

### Word Value for approximations

27
31
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