The International System of Units is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.
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The International System of Units (SI), commonly known as the metric system, is the international standard for measurement. ... The SI is made up of 7 base units that define the 22 derived units with special names and symbols.
The International System of Units is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.