INTERPOLATION

interpolation. Interpolation, n. an additin to an original

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In‐ter′po‐la″tion (?), n. [[L. interpolatio an alteration made here and there: cf. F. interpolation.]] 1. 1. The act of introducing or inserting anything, especially that which is spurious or foreign.
2. 2. That which is introduced or inserted, especially something foreign or spurious.
Bentley wrote a letter . . . . upon the scriptural glosses in our present copies of Hesychius, which he considered interpolations from a later hand. De Quincey. 3. 3. (Math.) The method or operation of finding from a few given terms of a series, as of numbers or observations, other intermediate terms in conformity with the law of the series.