'Interpolate' definitions:

Definition of 'interpolate'

verb

Estimate the value of [syn: interpolate, extrapolate]

verb

Insert words into texts, often falsifying it thereby [syn: interpolate, alter, falsify]

From: GCIDE

Interpolate \In*ter"po*late\, v. t. [imp. & p. p. Interpolated; p. pr. & vb. n. Interpolating.] [L. interpolatus, p. p. of interpolare to form anew, to interpolate, fr. interpolus, interpolis, falsified, vamped up, polished up; inter between + polire to polish. See Polish, v. t.] [1913 Webster]
1. To renew; to carry on with intermission. [Obs.] [1913 Webster]
Motion . . . partly continued and unintermitted, . . . partly interpolated and interrupted. --Sir M. Hale. [1913 Webster]
2. To alter or corrupt by the insertion of new or foreign matter; especially, to change, as a book or text, by the insertion of matter that is new, or foreign to the purpose of the author. [1913 Webster]
How strangely Ignatius is mangled and interpolated, you may see by the vast difference of all copies and editions. --Bp. Barlow. [1913 Webster]
The Athenians were put in possession of Salamis by another law, which was cited by Solon, or, as some think, interpolated by him for that purpose. --Pope. [1913 Webster]
3. (Math.) To fill up intermediate terms of, as of a series, according to the law of the series; to introduce, as a number or quantity, in a partial series, according to the law of that part of the series; to estimate a value at a point intermediate between points of knwon value. Compare extrapolate. [1913 Webster +PJC]