definitions
• synonyms

# 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 .css-1fxfie5{font-size:22px;}@media (max-width:768px){.css-1fxfie5{font-size:18px;margin:0 10px 10px 0;word-break:break-all;word-wrap:break-word;-webkit-hyphens:auto;-moz-hyphens:auto;-ms-hyphens:auto;hyphens:auto;line-height:22px;}}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

• #### 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

## Word Origin and History forextrapolation

### 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.