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verb

extrapolate

/ɪkˈstræpəleɪt/  ·  say it: ik·STRAP·uh·layt

to extend a conclusion to an unknown situation

In Formal & Academic

In more detail

1. (verb) to estimate or conclude something by assuming that a pattern or trend will continue in the same way

2. (verb) to use known facts or information to infer something unknown or future

Examples

How to use extrapolate

Extrapolate is used in scientific, statistical, and analytical contexts to describe reasoning from known data to make predictions or inferences about unknown situations. It carries an implication that the extension may involve risk or uncertainty, unlike more certain deduction. The word assumes continuity of patterns and is often qualified with warnings about reliability.

Register: formal

Common phrases

Synonyms

infer · project · extend · estimate · conjecture

Word family

extrapolation (noun) · extrapolated (adjective) · extrapolative (adjective)

A common mistake

Learners sometimes confuse extrapolate with interpolate, which means to estimate a value within a known range of data rather than beyond it.

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Nearby in Formal & Academic

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