SI

Synonym: International system of units
https://doi.org/10.1351/goldbook.S05653
@S06238@, the international system of units established in 1960 and based on seven base units for the quantities: length, time, mass, @E01927@, @T06321@, @A00297@ and @L03647@.
Source:
Green Book, 2nd ed., p. 69 [Terms] [Book]
See also:
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 995 [Terms] [Paper]