- extrapolation - (mathematics) calculation of the value of a function outside the range of known values
--1 is a kind of calculation, computation, figuring, reckoning
Derived form: verb extrapolate2 - extrapolation - an inference about the future (or about some hypothetical situation) based on known facts and observations
--2 is a kind of inference, illation
Derived forms: verb extrapolate1, verb extrapolate3