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The word for today is…

interpolate (verb) – 1. To insert or introduce between other elements or parts.
2. (a) To insert (material) into a text.
(b) To insert into a conversation.
3. To change or falsify (a text) by introducing new or incorrect material.
4. (Mathematics) (a) To estimate a value of (a function or series) between two known values.
(b) To create a continuous function that incorporates (a finite set of data), such as creating a curve that passes through a fixed set of points or a surface through a fixed set of curves.
5. To introduce estimated values of (pixel data) into a pixel array to improve the quality of an enlarged digital image.

Source : The Free Dictionary

Etymology : Interpolate comes from Latin interpolare, a verb with various meanings, among them “to refurbish,” “to alter,” and “to falsify.” (The polare part comes from polire, meaning “to polish.”) Interpolate entered English in the 17th century and was applied early on to the alteration (and in many cases corruption) of texts by insertion of additional material. Modern use of interpolate still suggests the insertion of something extraneous or spurious, as in “she interpolated her own commentary into the report.”

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