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common logarithm

American

noun

Mathematics.

a logarithm having 10 as the base.

common logarithm British

noun

a logarithm to the base ten. Usually written log or log 10 Compare natural logarithm

"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

common logarithm Scientific

A logarithm having 10 as its base.
Compare natural logarithm

Etymology

Origin of common logarithm

First recorded in 1890–95

Example Sentences

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common logarithm

The common logarithm of a number less than 1 has a negative value.

From Textbooks ● Feb. 14, 2019

For example, the common logarithm of 100 is 2, because 10 must be raised to the second power to equal 100.

From Textbooks ● Feb. 14, 2019

To obtain the common logarithm of a number, use the log button on your calculator.

From Textbooks ● Feb. 14, 2019

In other words, the expression means We call a base-10 logarithm a common logarithm.

From Textbooks ● Feb. 13, 2015

Real-world exponential problems with base can be rewritten as a common logarithm and then evaluated using a calculator.

From Textbooks ● Feb. 13, 2015

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023