INTERPOLATE

verb (-lated; -lating) Etymology: Latin interpolatus, past participle of interpolare to refurbish, alter, ~, from inter- + -polare (from polire to polish) Date: 1612 transitive verb 1. to alter or corrupt (as a text) by inserting new or foreign matter, to insert (words) into a text or into a conversation, to insert between other things or parts ; intercalate , to estimate values of (data or a function) between two known values, intransitive verb to make insertions (as of estimated values), see: introduce interpolation noun interpolative adjective interpolator noun