An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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SI units
  یکاهای ِ SI  
yekâhâ-ye SI
Fr.: Système International  

A coherent and rationalized system of units, in common use in physics since 1969. The seven basic units are the → meter, the → kilogram, the → second, the → ampere, the → kelvin, the → mole, and the → candela. Same as international system of units.

See also: SI, from Fr. Système Internationale d’unités; → unit.