From Longman Dictionary of Contemporary Englishinterpolatein‧ter‧po‧late /ɪnˈtɜːpəleɪt $ -ɜːr-/ verb [transitive] formal 1 TCNADDto put additional words into a piece of writing SYN insert2 INTERRUPTto interrupt someone by saying something —interpolation /ɪnˌtɜːpəˈleɪʃən $ -ˌtɜːr-/ noun [countable, uncountable]→ See Verb table
Examples from the Corpus
interpolate• Some of the writing seems to have been interpolated at a later date.• The bonds yield 42 points above the interpolated bond curve.Origin interpolate (1600-1700) Latin past participle of interpolare “to polish up, change, make worse” 