[ ɪn'tə:pəleɪt ]
■ verb
1》 insert (words) in a book, especially to give a false impression as to its date.
↘make such insertions in (a book).
2》 interject (a remark) in a conversation.
3》 Mathematics insert (an intermediate term) into a series by estimating or calculating it from surrounding known values.
Derivatives
interpolation noun
interpolative adjective
interpolator noun
Origin
C17: from L. interpolat- , interpolare 'refurbish, alter', from inter- 'between' + -polare (rel. to polire 'to polish').