# extrapolate

[ ik-strap-uh-leyt ]
/ ɪkˈstræp əˌleɪt /

### verb (used with object), ex·trap·o·lat·ed, ex·trap·o·lat·ing.

to infer (an unknown) from something that is known; conjecture.
Statistics. to estimate (the value of a variable) outside the tabulated or observed range.
Mathematics. to estimate (a function that is known over a range of values of its independent variable) to values outside the known range.

### verb (used without object), ex·trap·o·lat·ed, ex·trap·o·lat·ing.

to perform extrapolation.

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## Origin of extrapolate

First recorded in 1825–35; extra- + (inter)polate

## OTHER WORDS FROM extrapolate

ex·trap·o·la·tion, nounex·trap·o·la·tive, ex·trap·o·la·to·ry [ik-strap-uh-luh-tawr-ee, -tohr-ee] /ɪkˈstræp ə ləˌtɔr i, -ˌtoʊr i/, adjectiveex·trap·o·la·tor, nouno·ver·ex·trap·o·la·tion, noun

## WORDS THAT MAY BE CONFUSED WITH extrapolate

deduction extrapolation induction generalization hypothesis

## Words nearby extrapolate

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

## British Dictionary definitions for extrapolatory

extrapolate
/ (ɪkˈstræpəˌleɪt) /

### verb

maths to estimate (a value of a function or measurement) beyond the values already known, by the extension of a curveCompare interpolate (def. 4)
to infer (something not known) by using but not strictly deducing from the known facts

## Derived forms of extrapolate

extrapolation, nounextrapolative or extrapolatory, adjectiveextrapolator, noun

## Word Origin for extrapolate

C19: extra- + -polate, as in interpolate
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

## Scientific definitions for extrapolatory

extrapolate
[ ĭk-străpə-lāt′ ]

To estimate the value of a quantity that falls outside the range in which its values are known.