Translation guide
The fractional part of a logarithm or a floating-point number. In Japanese, this is expressed with the technical term 仮数 (kasū) or the more descriptive 小数部 (shōsūbu).
The fractional part of a logarithm or the significand in floating-point representation.
Standard technical term for mantissa in both logarithmic and floating-point contexts.
The mantissa of a floating-point number represents the significant digits.
Literally 'decimal part', often used to describe the fractional part of a number, including the mantissa in floating-point.
The decimal part of a logarithm is called the mantissa.