What does "interpolate" mean?

To introduce (something) between other things; especially to insert (possibly spurious) words into a text.

What is a synonym for "interpolate"?

Common synonyms include: add, admit, alter, annex, append, drag in.

Pronounced //ɪnˈtɜː.pəˌleɪt//.

//ɪnˈtɜː.pəˌleɪt// verb

verb ·Uncommon ·College level

Verb

1
To introduce (something) between other things; especially to insert (possibly spurious) words into a text. intransitive, transitive
"in verse 74, the second line is clearly interpolated, probably by some unknown medieval scribe"
2
insert words into texts, often falsifying it thereby wordnet
3
To estimate the value of a function between two tabulated points.
4
estimate the value of something based on known values wordnet
5
During the course of processing some data, and in response to a directive in that data, to fetch data from a different source and process it in-line along with the original data.
"A macro is invoked in the same way as a request; a control line beginning .xx will interpolate the contents of macro xx."