The decimal part of a logarithm, as distinguished from the integral part, or characteristic.
Nonintegral, decimal part of a logarithm.
The fractional or decimal part of a logarithm of a number. For example, the logarithm of 163 is 2.212. The mantissa is 0.212, and the characteristic is 2.0. In floating-point numbers, the mantissa is the number part. For example, the number 24 can be written as 24, 2 where 24 is the mantissa and 2 is the exponent. The floating-point number is read as .24 × 102, or 24.
the positive fractional part of the representation of a logarithm; in the expression log 643 = 2.808 the mantissa is .808
Part of the numerical representation used to express a floating-point number. Floating-point numbers are typically represented as See also exponent, floating-point representation