Interpolate

in-ter'po-lat, v. t. To insert (a spurious word or pa age) in a manuscript or book; to foist in; to alter or corrupt by the insertion of foreign matter; esp. to change by the insertion of matter that is new or foreign to the author's purpose. (Math.) To fill up intermediate terms of (a series) according to the law of the series. — Inter'pol a'tion, re, Act of, etc.; a spurious word or pa age in the genuine writings of an author. (Math.) The operation of finding from a few given terms of a series, other intermediate terms in conformity with the law of the series. — Inter'pol a'tor, -ter, re.