単たん位い列れつMeanings1noununit stringcomputingComputing term for a string that represents a unit of measurement, such as 'kg', 'm', or 'px'.CSSでは、長ながさの値あたいに必かならず単たん位い列れつを付つける必ひつ要ようがある。In CSS, you must always append a unit string to length values.