# logarithm

noun log·a·rithm \ ˈlȯ-gə-ˌri-t͟həm , ˈlä- \
Updated on: 16 Apr 2018

## Definition of logarithm

: the exponent that indicates the power to which a base number is raised to produce a given number
• the logarithm of 100 to the base 10 is 2

## Recent Examples of logarithm from the Web

• Like logarithms, or the zero, or exponential functions.
• An economic adviser talked up the country’s technological achievements, which include the publication of an early volume of logarithm tables.
• Salguero: The bike is, theoretically, according to all our logging and logarithms and stuff, capable of over 160 mph.
• But GAMs can also handle trickier relationships by finding multiple operations that together can massage data to fit on a regression line: squaring a set of numbers while taking the logarithm for another group of variables, for example.

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'logarithm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

## Origin and Etymology of logarithm

New Latin logarithmus, from log- + Greek arithmos number — more at arithmetic

## Definition of logarithm for English Language Learners

• mathematics : a number that shows how many times a base number (such as ten) is multiplied by itself to produce a third number (such as 100)

## Seen and Heard

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