## mantissa

man·tis·saAn example of mantissa is 234 in the number 1101.234.

## mantissa

*characteristic*): .7193 is the

*mantissa*of the logarithm 4.7193

Origin of mantissa

L, (useless) addition, makeweight, gain, uncertain or unknown; perhaps via Etruscan from Celt: uncertain or unknown; perhaps so named because it supplements the integral## mantissa

noun

Origin of mantissa

Latin*makeweight*

*perhaps of Etruscan origin*

## mantissa

(*plural* mantissae)

- (mathematics) The part of a common logarithm after the decimal point, the fractional part of a logarithm.
- (mathematics, computing, proscribed) The significand; that part of a floating-point number or number in scientific notation that contains its significant digits.

The use of mantissa to refer to significant digits in a floating point number or scientific notation is discouraged by some in favor of *significand*, due to earlier distinct usage for the logarithm. It remains in widespread use in the US, however.

From Latin *mantissa*, *mantÄ«sa*, of unknown origin (said by Festus to be a loanword from Etruscan, but it may actually be from Celtic,^{ } possibly through Etruscan mediation).

## mantissa - Computer Definition

The numeric value in a floating point number. See floating point.