Also found in: Thesaurus, Medical, Financial, Encyclopedia, Wikipedia.
Na·pier·i·an logarithm(nə-pîr′ē-ən, nā-)
See natural logarithm.
[After John Napier.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Napierian logarithm(nəˈpɪərɪən; neɪ-)
(Mathematics) another name for natural logarithm
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a logarithm having e as a base. Symbol: ln Also called Napierian logarithm. Compare common logarithm.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.