[ in-tur-puh-ley-shuh n ]
/ ɪnˌtɜr pəˈleɪ ʃən /


the act or process of interpolating or the state of being interpolated.
something interpolated, as a passage introduced into a text.
  1. the process of determining the value of a function between two points at which it has prescribed values.
  2. a similar process using more than two points at which the function has prescribed values.
  3. the process of approximating a given function by using its values at a discrete set of points.

Nearby words

  1. interpleural space,
  2. interpol,
  3. interpolar,
  4. interpolate,
  5. interpolated extrasystole,
  6. interpolator,
  7. interpose,
  8. interposition,
  9. interpret,
  10. interpretable

Origin of interpolation

First recorded in 1605–15, interpolation is from the Latin word interpolātiōn- (stem of interpolātiō). See interpolate, -ion

Related formsnon·in·ter·po·la·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for interpolation

British Dictionary definitions for interpolation


/ (ɪnˌtɜːpəˈleɪʃən) /


the act of interpolating or the state of being interpolated
something interpolated
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 interpolation



1610s, from French interpolation (early 17c.), or directly from Latin interpolationem (nominative interpolatio), noun of action from past participle stem of interpolare (see interpolate).

Online Etymology Dictionary, © 2010 Douglas Harper