Dictionary
log•a•rithm
Pronunciation: (lô'gu-ri&thslash;"um, -rith"-, log'u-), [key]—
n. Math.
the exponent of the power to which a base number must be raised to equal a given number; log:
2 is the logarithm of 100 to the base 10 (2 = log10 100). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.