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Noun: extrapolation  ik'stra-pu,ley-shun
  1. (mathematics) calculation of the value of a function outside the range of known values
  2. An inference about the future (or about some hypothetical situation) based on known facts and observations

Derived forms: extrapolations

Type of: calculation, computation, figuring, illation, inference, reckoning

Encyclopedia: Extrapolation