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mantissa

[man-tis-uh] /mænˈtɪs ə/
noun
1.
Mathematics. the decimal part of a common logarithm.
Compare characteristic (def 3a).
2.
Obsolete. an addition of little or no importance, as to a literary work.
Origin
1860-1865
1860-65; < Latin, variant of mantisa addition, makeweight, said to be from Etruscan; logarithmic mantissa so called because it is additional to the characteristic or integral part (term introduced by H. Briggs)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for mantissa
  • The mantissa is drawn next to the major tick and the exponent string is appended to the axis label.
  • Properties of float types include the size and location of the exponent and mantissa, and the location of the sign bit.
British Dictionary definitions for mantissa

mantissa

/mænˈtɪsə/
noun
1.
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 characteristic (sense 2a)
Word Origin
C17: from Latin: something added, of Etruscan origin
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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Word Origin and History for mantissa
n.

decimal part of a logarithm, 1865, from Latin mantisa "a worthless addition, makeweight," perhaps a Gaulish word introduced into Latin via Etruscan (cf. Old Irish meit, Welsh maint "size").

Online Etymology Dictionary, © 2010 Douglas Harper
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mantissa in Science
mantissa
  (mān-tĭs'ə)   
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® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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mantissa in Technology


1. The part of a floating point number which, when multiplied by its radix raised to the power of its exponent, gives its value. The mantissa may include the number's sign or this may be considered to be a separate part.
2. The fractional part of a logarithm.
(1996-06-15)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Word Value for mantissa

10
12
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