from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The decimal part of a logarithm. In the logarithm 2.95424, the mantissa is 0.95424.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A minor addition to a text.
  • n. The part of a common logarithm after the decimal point, the fractional part of a logarithm.
  • n. The significand; that part of a floating-point number or number in scientific notation that contains its significant digits.

from the GNU version of the Collaborative International Dictionary of English

  • n. The decimal part of a logarithm, as distinguished from the integral part, or characteristic.

from The Century Dictionary and Cyclopedia

  • n. A supplementary treatise; a lesser work following one on the same subject.
  • n. The decimal part of a logarithm: so called as being additional to the characteristic or integral part.
  • n. [capitalized] In zoology, a genus of mollusks.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the positive fractional part of the representation of a logarithm; in the expression log 643 = 2.808 the mantissa is .808


from The American Heritage® Dictionary of the English Language, 4th Edition

Latin, makeweight, perhaps of Etruscan origin.

from Wiktionary, Creative Commons Attribution/Share-Alike License

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


  • Even when the mantissa can be expressed with a single base-10 digit, like .4, it may not be the case in base 2.

    Exponential Growth in Physical Systems « Climate Audit

  • -- The peripatetic Alexander of Aphrodisias who fought fatalism in his [Greek: Peri heimarmenês], at the beginning of the third century, and who violently attacked the charlatanism and cupidity of the astrologers in another book (_De anima mantissa_, p. 180, 14, Bruns), formulated the contradiction in the popular beliefs of his time (_ibid. _, p. 182, 18):

    The Oriental Religions in Roman Paganism

  • The frexp intrinsic function has been updated to return a mantissa in the range of Mixed RSS Feed

  • When ColdFusion was generating the ID for the input, it was happily smashing the mantissa of the points together.

    O'Reilly News and Commentary

  • I decided to take the mantissa of the latitude and longitude points (everything to the right of the decimal point) and combine them together to get a unique id.

    O'Reilly News and Commentary

  • · Exponents are entered and displayed in the same base as the mantissa.

    Softpedia - Windows - All

  • Int64 and UInt64 types are not available yet because JavaScript 64-bit (8 bytes) float point number have only 52-bit mantissa which means that it is not possible to work with 64-bit whole numbers properly.

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  • Programming & Design what is mantissa and exponent in binary representation of real numbers? how would i get an income source without spending any cost for tutorials or any materials?

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  • (link) Whereas mine only rhymes well with math things, mantissa and abscissa and like that.

    mrissa: Also

  • As long as I have the editor's attention I will ask if readers know of another word, besides ` mantissa '(or mantisa), that is believed to derive from both Welsh and Etruscan?

    VERBATIM: The Language Quarterly Vol V No 1


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  • The significand (also mantissa or coefficient, sometimes also argument or fraction) is part of a number in scientific notation or a floating-point number, consisting of its significant digits. Depending on the interpretation of the exponent, the significand may represent an integer or a fraction. The word mantissa seems to have been introduced by Arthur Burks in 1946 writing for the Institute for Advanced Study at Princeton, although this use of the word is discouraged by the IEEE floating-point standard committee as well as some professionals such as the creator of the standard, William Kahan."


    August 8, 2018

  • the slurred response from my date last night, after we fooled around a bit and then i sent him home

    May 25, 2009