Mantissa



[man-tis-uh] /mænˈtɪs ə/

noun
1.
Mathematics. the decimal part of a common logarithm.
Compare (def 3a).
2.
Obsolete. an addition of little or no importance, as to a literary work.
/mænˈtɪsə/
noun
1.
the fractional part of a common logarithm representing the digits of the associated number but not its magnitude: the mantissa of 2.4771 is .4771 Compare characteristic (sense 2a)
n.

decimal part of a logarithm, 1865, from Latin mantisa “a worthless addition, makeweight,” perhaps a Gaulish word introduced into Latin via Etruscan (cf. Old Irish meit, Welsh maint “size”).
mantissa
(mān-tĭs’ə)
The part of a logarithm to the base ten that is to the right of the decimal point. For example, if 2.749 is a logarithm, .749 is the mantissa. Compare characteristic.

1. The part of a floating point number which, 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. The fractional part of a logarithm.
(1996-06-15)

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