International System of Units


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International System of Units

also International System
n.
A complete, coherent system of units used for scientific work, in which the fundamental quantities are length, time, electric current, temperature, luminous intensity, amount of substance, and mass. The International System of Units unit of length is the meter; the unit of time is the second.

Interna′tional Sys′tem of U′nits


n.
an internationally accepted system of physical units, using the meter, kilogram, second, ampere, kelvin, mole, and candela as the basic units of length, mass, time, electric current, temperature, amount of substance, and luminous intensity. Abbr.: SI
[translation of the earlier French name Système Internationale d'Unités]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.International System of Units - a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela); "Today the United States is the only country in the world not totally committed to the Systeme International d'Unites"
metric system - a decimal system of weights and measures based on the meter and the kilogram and the second
Translations
SI-järjestelmä
国際単位系
References in periodicals archive ?
Most metric units belong to the International System of Units (SI), and the liter, hectare, and metric ton are accepted for use with the SI units.
A calibrator that uses the International System of Units (SI base units) of time and length to derive gas flow measurements can be considered primary technology.
Establishing metrological traceability requires that the calibration material used for a result (or a run, or series of calibration materials), has certified property values that have an unbroken chain of comparisons going back to the appropriate national or international standard--for example, the use of cert-fied reference materials (CRM) from a National Metrology Institute (NMI) such as the National Institute of Standards and Technology (NIST) which have assigned values that are traceable to the International System of units (SI units).
The shift will most notably affect the kilogram, the base measure of mass and the last member of the International System of Units still defined by a physical object.
assignments, dissertations and manuscripts, where the International System of Units (SI) is not used optimally.
The text uses both the International System of Units (SI) and customary units.
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.

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