AskDefine | Define mantissa

Dictionary Definition

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

User Contributed Dictionary



From Classical Latin mantissa, of unknown origin (said by Festus to be a loanword from Etruscan).


  1. A minor addition to a text.
  2. The part of a common logarithm after the decimal point.
  3. (mathematics and computing) The significand; that part of a floating-point number that contains its significant digits.

Extensive Definition

Mantissa can mean:
Mantissa can also refer to:
  • Mantissa is also a novel by John Fowles.
  • Mantissa is the name of a loose collection of ships which initially formed the base of the Yuhl/Goehl species/civilization in the Orphans of Earth Trilogy by Shawn Williams and Shane Dix.
  • Mantissa Corporation is a manufacturing company located in Charlotte, North Carolina. Specializing in Tilt Tray sorters typically used in distribution centers, internet and mail order centers, postal centers and airports for baggage handling.
  • Mantissa Corporation is the name of a software development company specializing in products for datacenter management and optimization. Founded in 1980, the company is currently headquartered in Birmingham, Alabama, with a subsidiary located in the United Kingdom along with representative agents in South Africa, Norway, Italy, Japan, Singapore and South Korea.
  • Mantissa is also the name of an early nineties Australian rock/metal band, formed by members of alternative/rock band Killing Time following that group's demise. Mantissa released one LP which attained limited distribution.
mantissa in German: Mantisse
mantissa in Russian: Мантисса
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