In math, to interpolate means to estimate the value of something given certain data. If you are looking at a chart that gives the level of pollutants in a lake on Jan. 1 and Feb. 1, you must interpolate the level for Jan. 15.

At a bake sale, if you check the cash box and look at how many cookies are left over, you can interpolate the results of your fundraiser. When you interpolate words into a text, you alter the text by adding words in. Scholars can identify the original text from material interpolated at a later date. If you are describing an author's work, you might want to interpolate a few examples of his writing into your description.

Primary Meanings of interpolate

insert words into texts, often falsifying it thereby
estimate the value of
Full Definitions of interpolate

v insert words into texts, often falsifying it thereby

alter, falsify
Type of:
edit, redact
prepare for publication or presentation by correcting, revising, or adapting

v estimate the value of

Type of:
calculate, cipher, compute, cypher, figure, reckon, work out
make a mathematical calculation or computation

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