Pronunciation: (in-tûr"pu-lā'shun), [key]
1. the act or process of interpolating or the state of being interpolated.
2. something interpolated, as a passage introduced into a text.
a. the process of determining the value of a function between two points at which it has prescribed values.
b. a similar process using more than two points at which the function has prescribed values.
c. the process of approximating a given function by using its values at a discrete set of points.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.