[an-ti-law-guh-rith-uh m, -rith-, -log-uh-]

noun Mathematics.

the number of which a given number is the logarithm; antilog

Origin of antilogarithm

First recorded in 1790–1800; anti- + logarithm
Related formsan·ti·log·a·rith·mic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for antilogarithm



a number whose logarithm to a given base is a given number100 is the antilogarithm of 2 to base 10 Often shortened to: antilog
Derived Formsantilogarithmic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

antilogarithm in Science


[ăn′tē-lôgə-rĭð′əm, ăn′tī]

The number whose logarithm is a given number. For example, the logarithm of 1,000 (103) is 3, so the antilogarithm of 3 is 1,000. In algebraic notation, if log x = y, then antilog y = x.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.