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extrapolation

[ik-strap-uh-ley-shuh n]
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noun
  1. an act or instance of inferring an unknown from something that is known.
  2. Statistics, Mathematics. the act or process of estimating the value of a variable or function outside the tabulated or observed range.

Origin of extrapolation

First recorded in 1870–75; extrapolat(e) + -(t)ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for extrapolation

Historical Examples

  • An extrapolation from the fact that there was vegetation below.

    Operation: Outer Space

    William Fitzgerald Jenkins

  • Abolish, now, one of the percipients, and the interpolation changes into ‘extrapolation.’

  • You claim that you actually guessed where that ship was going to be, but you followed the computer's extrapolation instead?

    But, I Don't Think

    Gordon Randall Garrett

  • The last three values are those obtained by extrapolation with platinum-rhodium and platinum-iridium couples.

  • Abolish, now, one of the percipients, and the interpolation changes into 'extrapolation.'


Word Origin and History for extrapolation

n.

by 1867, from extra- + back half of interpolation; original sense was "insert intermediate terms in a mathematical series." Transferred sense of "drawing a conclusion about the future based on present tendencies" is from 1889. Cf. extrapolate.

Online Etymology Dictionary, © 2010 Douglas Harper

extrapolation in Culture

extrapolation

[(ik-strap-uh-lay-shuhn)]

A mathematical procedure designed to enable one to estimate unknown values of a parameter from known values. A common method of extrapolation is to look at data on a curve, then extend the curve into regions for which there is no data. Extrapolation is often used to predict the future.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.