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A basic SI unit logo.

In acronyms, SI (LH:2) stands for “System International”, referring to the internationally-agreed upon system for "units" of measurement in science, aka "SI unit".[1]


In 1875, at the Meter Convention, Paris, seventeen nations signed a treaty, which initiated the "System International" (SI) organization, which presently is regulated and continually developed by three international organizations.

In 1960, the SI unit system became "standardized" full, and the de facto language of science, in respect to units, thereafter.

End matter

See also


  1. SI base unit – Wikipedia.

External links

  • SI – Wikipedia.