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
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
Latin, makeweight, perhaps of Etruscan origin.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin mantissa, of unknown origin (said by Festus to be a loanword from Etruscan). (Wiktionary)