Interpolating refers to the act of estimating or approximating a value or quantity that falls between two known values. Synonyms for interpolating include estimating, approximating, calculating, computing, measuring and determining. The term is also closely related to the mathematical concept of interpolation, which involves using a set of known data points to estimate or predict the values between them. Other related synonyms include extrapolating, which involves estimating values beyond known data points, and smoothing, which involves using statistical techniques to reduce the effects of random noise or fluctuations in data. In general, the term interpolating is used in a wide range of fields, including mathematics, statistics, engineering, and computer science.