International System of Units

A system of physical units in which the fundamental quantities are length, time, mass, electric current, temperature, luminous intensity, and amount of substance, and the corresponding units are the meter, second, kilogram, ampere, kelvin, candela, and mole. The system has been given official status and recommended for universal use by the General Conference on Weights and Measures.

Year introduced: 1991(1979)

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Tree Number(s): E05.978.507

MeSH Unique ID: D007394

Entry Terms:

• Systeme International d'Unites
• SI Units
• SI Unit
• Unit, SI
• Units, SI

Previous Indexing:

• Metric System (1974-1978)
• Weights and Measures (1966-1978)

All MeSH Categories
Analytical, Diagnostic and Therapeutic Techniques and Equipment Category
Investigative Techniques
Weights and Measures
International System of Units