非ひ正せい規き数すうひせいきすうMeanings1nounsubnormal number; denormal numberabbreviationcomputingComputing term for a floating-point number smaller than the smallest normal number. Abbreviation of 非正規化数.See also: 非正規化数IEEE 754では、非ひ正せい規き数すうはゼロに近ちかい非ひ常じょうに小ちいさな