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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
approximative, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for approximative

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
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for approximative

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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approximative 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
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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