A floating-point number with a value very close to zero.

a floating-point number with a minimum exponent and a nonzero mantissa which has a leading bit of zero

A computational floating-point result smaller than the lowest value in the normal range of a data type (the smallest representable normalized number). You cannot write a constant for a denormalized number.

A nonzero floating-point number that has the following properties: Its exponent has a reserved value, usually the format's minimum. Its explicit or implicit leading significand bit is zero.

A nonzero binary floating-point number whose significand has an implicit leading bit of 0 and whose exponent is the minimum exponent for the number's data format. Also called denorm. See also normalized number.