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mantissa n. 尾数 尾数 mantissa ( 对数的 )假数; 假数; 尾数; 定值部; 浮点数 mantissa 尾数 mantissa n 1: the positive fractional part of the representation of a logarithm; in the expression log 643 = 2.808 the mantissa is .808 [synonym: {mantissa}, {fixed-point part}] mantissa \man*tis*sa\, n. [L., an addition, makeweight; of Tuscan origin.] (Math.) The decimal part of a logarithm, as distinguished from the integral part, or {characteristic}. [1913 Webster] 1.
when multiplied by its {radix} raised to the power of its {exponent}, gives its value. The mantissa may include the number's sign or this may be considered to be a separate part. 2. (1996-06-15)
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