Pronunciation: (ik-strap'u-lāt"), [key]
—v., -lat•ed, -lat•ing.
1. to infer (an unknown) from something that is known; conjecture.
2. Statistics.to estimate (the value of a variable) outside the tabulated or observed range.
3. Math.to estimate (a function that is known over a range of values of its independent variable) to values outside the known range.
to perform extrapolation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.