Definition of Interpolation

Noun: interpolation in,tur-pu'ley-shun

A message (spoken or written) that is introduced or inserted
"with the help of his friend's interpolations his story was eventually told";
- insertion
(mathematics) calculation of the value of a function between the values already known
The action of interjecting or interposing an action or remark that interrupts
- interjection, interposition, interpellation