interpolate

UK: ɪnˈtɜː.pə.leɪt | US: ɪnˈtɜːr.pə.leɪt

Definition
  1. vt. to insert (something) between fixed points or existing elements

  2. vt. to estimate or infer (a value) within a sequence of known values

  3. vt. to alter or falsify (a text) by inserting new material

Structure
inter <between>pol <smooth/refine>ate <verb suffix>
Etymology

The word "interpolate" originates from Latin interpolare, meaning "to refurbish or alter." It combines inter- (between) and polire (to polish or refine). Historically, it referred to altering texts by inserting new material, later expanding to mathematical contexts (estimating intermediate values). The morpheme pol reflects the idea of refining or smoothing data or text.

Examples
  1. The editor decided to interpolate a clarifying paragraph into the manuscript.

  2. Scientists often interpolate missing data points in climate models.

  3. The ancient manuscript was found to interpolate later religious commentary.

  4. The software can interpolate frames to create smoother video playback.

  5. Critics accused the translator of interpolating his own biases into the text.