logarithm > define
noun
- The exponent required to produce a given number.
- synonyms: log
by WordNet 3.0 © 2006 by Princeton University
(n.) One of a class of auxiliary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and division.
by Webster's Revised Unabridged Dictionary