system of units

of measurement
https://doi.org/10.1351/goldbook.S06237
Set of base units, together with derived units, defined in accordance with given rules, for a given system of quantities, e.g. @S06238@ (SI).
Source:
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 995 [Terms] [Paper]