definition of
[interpolation]

[1] #1 interpolation n. [insertion] a message (spoken or written) that is introduced or inserted; "with the help of his friend's interpolations his story was eventually told"; "with many insertions in the margins". wn

[2] #2 interpolation n. (mathematics) calculation of the value of a function between the values already known. wn

[3] #3 interpolation n. [interjection, interposition, interpellation] the action of interjecting or interposing an action or remark that interrupts. wn