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What does SI stand for?

SI stands for International System of Units (metric system; more commonly seen as ISU)

This definition appears very rarely and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

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We have 92 other meanings of SI in our Acronym Attic

Samples in periodicals archive:

The number of available drugs has increased by a wide margin, further necessitating this comprehensive index divided into fifteen sections: drug monographs, standard medical abbreviations, calculations, common systems of weights and measures, approximate practical equivalents, international system of units, normal laboratory values, FDA pregnancy categories, controlled substances summary, medical terminology glossary, oral dosage forms that should not be crushed or chewed, drug names that look alike and sound alike, discontinued drugs, common abbreviations of chemotherapy regimens, and a manufacturer and distributor listing.
In 2007 Panama adopted the International System of Units to be officially used, but its implementation will begin in Dec.
In October 2011, the CGPM adopted a plan to redefine four of the seven base units of the International System of Units (SI) in terms of the invariants of nature--the fundamental physical constants or properties of atoms.
Over the last three months we have seen some positive developments such as the extension of the property visa period from six months to three years and the implementation of the International System of Units, which will bring uniformity of scale to the market, Elaine Jones, CEO, Asteco Property Management, said in a statement.
The UAE will implement the International System of Units (SI) replacing feet, inches and yards in favour of metres, effective from November 11 (11/11/11) this year.
Edited and produced by the staff at the American Society of Civil Engineers, this volume uses both the International System of Units and customary units for general electrical equipment, traction power substation equipment, wayside power collection, power supplies, disabled persons access requirements, platform edge protection, evacuation of misaligned trains, emergency lighting and ventilation and fire protection.