SI system


Also found in: Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.
Related to SI system: English system
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.SI system - a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela); "Today the United States is the only country in the world not totally committed to the Systeme International d'Unites"
metric system - a decimal system of weights and measures based on the meter and the kilogram and the second
References in periodicals archive ?
The litre is not a base unit of the SI system any longer.
Not only are we now far too reliant on often inadequate and unreliable mechanical means of snow removal, but the EU mandated adoption of the SI system of units has brought a touch of fatalism to how Britons regard low temperatures.
Not only are we now far too reliant on often inadequate and unreliable mechanical means of snow removal, but the European Union mandated adoption of the SI system of units has brought a touch of fatalism to how Britons regard low temperatures.
All of the problems in the third edition use the SI system of units.
Regarding units, the International System of Units (SI) is mandated in this and all NIST publications, so you will of course see units of the SI system such as the meter (in), kilogram (kg), second (s), etc.
It is also the time to remember that heat, work and energy are expressed in base or derived units of joules J using the SI system.
As the SI system is based upon relating back to the base unit, the correct SI unit is mS [m.