I suppose you mean "system of measurement". SI is a variation of the metric system; it is the current official international system of measurements, used in most countries of the world, and which includes such well-known units as meter and kilogram.
si units are based on the metric system system international (French) international system (English)
SI is also known as The International System of Units Please, do not mistake SI for the former, now obsolete, designation 'metric system'
International System of Units (SI)
The SI, of course!The SI, of course!The SI, of course!The SI, of course!
"SI", from the French "Systeme Internationale".
The SI system - International System, after its name in French.
SI (French abbreviation for "International System") is, in English, the metric system. So the standard measure in SI is the meter.
No, pounds and inches are not part of the SI (International System of Units). The SI system uses kilograms for mass and meters for length.
The base unit of time in the SI system is the second.
The unit of pole strength in the SI system is ampere-meter (A•m).
The largest prefix in the SI system is "yotta-" denoting 10^24.
SI means "International System [of Units]" (from the French abbreviation).