Meaning of extrapolate

ex•trap•o•late

Pronunciation: (ik-strap'u-lāt"), [key]
— v., -lat•ed, -lat•ing.
—v.t.
  1. to infer (an unknown) from something that is known; conjecture.
  2. to estimate (the value of a variable) outside the tabulated or observed range.
  3. to estimate (a function that is known over a range of values of its independent variable) to values outside the known range.
—v.i.
  1. to perform extrapolation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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