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common logarithm

American  

noun

Mathematics.

  1. a logarithm having 10 as the base.

common logarithm British  

noun

  1. 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  

  1. A logarithm having 10 as its base.

  2. Compare natural logarithm

Etymology

Origin of common logarithm

First recorded in 1890–95

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In that case we often take the common logarithm or natural logarithm of both sides once the exponential is isolated.

From Textbooks • May 6, 2020

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

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

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

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.