interpolation
n.n. the process of adding extra information or details to a piece of text or a piece of music. It can also mean the act of guessing a missing value based on the values around it.
n. the process of inserting additional material into a text or performance; also refers to the mathematical technique of estimating values between known data points.
The editor added a brief interpolation to clarify the historical context.
The software uses linear interpolation to fill in the gaps between the sampled audio points for a smoother sound.
While the author's original manuscript was sparse, the published version includes several interpolations that provide a more comprehensive understanding of the era's social dynamics.
From French interpolation, from Latin interpolatio. Morphologically interpolate + -ion.