International System of Units
noun phraseDefinition of International System of Units
: a system of units based on the metric system and developed and refined by international convention especially for scientific work
—abbreviation SI
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More Definitions for International System of Units
International System of Units
noun
In·ter·na·tion·al System of Units
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Medical Definition of International System of Units
: an internationally accepted system of units based on the metric system and having the meter, kilogram, second, ampere, kelvin, mole, and candela as base units, the radian and steradian as supplementary units, and deriving all other units from these
—abbreviation SI
— called also International System