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Definition of Mantissa
1. Noun. The positive fractional part of the representation of a logarithm; in the expression log 643 = 2.808 the mantissa is .808.
Definition of Mantissa
1. n. The decimal part of a logarithm, as distinguished from the integral part, or characteristic.
Definition of Mantissa
1. the decimal part of a logarithm [n -S]
Medical Definition of Mantissa
1.