approximation

[ uh-prok-suh-mey-shuh n ]
/ əˌprɒk səˈmeɪ ʃən /

noun

a guess or estimate: Ninety-three million miles is an approximation of the distance of the earth from the sun.
nearness in space, position, degree, or relation; proximity; closeness.
Mathematics, Physics. a result that is not necessarily exact, but is within the limits of accuracy required for a given purpose.

Nearby words

  1. approx.,
  2. approximal,
  3. approximant,
  4. approximate,
  5. approximately,
  6. approximation suture,
  7. appt.,
  8. apptd.,
  9. appulse,
  10. appurtenance

Origin of approximation

1400–50; late Middle English approximacioun (< Middle French) < Medieval Latin approximātiōn-, stem of approximātiō. See approximate, -ion

Related formsap·prox·i·ma·tive, adjective

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

Examples from the Web for approximation


British Dictionary definitions for approximation

approximation

/ (əˌprɒksɪˈmeɪʃən) /

noun

the process or result of making a rough calculation, estimate, or guesshe based his conclusion on his own approximation of the fuel consumption
an imprecise or unreliable record or versionan approximation of what really happened
maths an inexact number, relationship, or theory that is sufficiently accurate for a specific purpose
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

Word Origin and History for approximation

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

Medicine definitions for approximation

approximation

[ ə-prŏk′sə-māshən ]

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.