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3 definitions found
 for mantissa
From The Collaborative International Dictionary of English v.0.48 :

  mantissa \man*tis*sa\, n. [L., an addition, makeweight; of
     Tuscan origin.] (Math.)
     The decimal part of a logarithm, as distinguished from the
     integral part, or characteristic.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

  mantissa
      n 1: the positive fractional part of the representation of a
           logarithm; in the expression log 643 = 2.808 the mantissa
           is .808 [syn: mantissa, fixed-point part]

From The Free On-line Dictionary of Computing (30 December 2018) :

  mantissa
  
     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)
  

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