interpolate Definition

interpolate
verb interpolated, interpolating

1. To add (words) to a book or manuscript, especially in order to make the text misleading or corrupt.
2. To alter (a text) in this way.
3. To interrupt a conversation, a person speaking, etc with (a remark or comment).

Thesaurus: interject, introduce, insert,add, incorporate.
4. math.
To estimate (the value of a function) at a point between values that are already known.

Derivative: interpolation
noun

Etymology: 17c: from Latin interpolare, interpolatum to refurbish.