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natural logarithm

noun, Mathematics
1.
a logarithm having e as a base. Symbol: ln.
Also called Napierian logarithm.
Compare common logarithm.
Origin
1810-1820
1810-20
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for natural logarithm

natural logarithm

noun
1.
a logarithm to the base e. Usually written loge or ln Also called Napierian logarithm Compare e (sense 1), common 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
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natural logarithm in Science
natural logarithm  
A logarithm using base e. Natural logarithms are common in mathematics, especially in cases involving complex numbers. They are also called Napierian logarithms, after their inventor, English mathematician John Napier (1550-1617). See more at e. Compare common logarithm.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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