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The decimal part of a logarithm. In the logarithm 2.95424, the mantissa is 0.95424.
[Latin, makeweight, perhaps of Etruscan origin.]
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.
(Mathematics) the fractional part of a common logarithm representing the digits of the associated number but not its magnitude: the mantissa of 2.4771 is .4771. Compare characteristic2a
[C17: from Latin: something added, of Etruscan origin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
n., pl. -sas.
the decimal part of a common logarithm. Compare characteristic (def. 3a).
[1860–65; < Latin, variant of mantisa addition; because additional to the characteristic part]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
The part of a logarithm to the base ten that is to the right of the decimal point. For example, if 2.749 is a logarithm, .749 is the mantissa. Compare characteristic.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||mantissa - the positive fractional part of the representation of a logarithm; in the expression log 643 = 2.808 the mantissa is .808|
fraction - the quotient of two rational numbers
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