- to introduce (something additional or extraneous) between other things or parts; interject; interpose; intercalate.
- Mathematics. to insert, estimate, or find an intermediate term in (a sequence).
- to alter (a text) by the insertion of new matter, especially deceptively or without authorization.
- to insert (new or spurious matter) in this manner.
- to make an interpolation.
Origin of interpolate
- to insert or introduce (a comment, passage, etc) into (a conversation, text, etc)
- to falsify or alter (a text, manuscript, etc) by the later addition of (material, esp spurious or valueless passages)
- (intr) to make additions, interruptions, or insertions
- maths to estimate (a value of a function) between the values already known or determinedCompare extrapolate (def. 1)
Word Origin for interpolate
1610s, "to alter or enlarge (a writing) by inserting new material," from Latin interpolatus, past participle of interpolare "alter, freshen up, polish;" of writing, "falsify," from inter- "up" (see inter-) + polare, related to polire "to smoothe, polish." Sense evolved in Latin from "refurbish," to "alter appearance of," to "falsify (especially by adding new material)." Middle English had interpolen (early 15c.) in a similar sense. Related: Interpolated; interpolating.