International System of Units

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International System of Units

also International System
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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Interna′tional Sys′tem of U′nits

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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
A kilo of unga will still remain one kilo," Mr Nguyo said.In November last year, scientists from more than 60 nations converged at the General Conference on Weights and Measures (CGPM) to redefine the kilogram, the base unit of mass in the International System of Units (SI).
skThe lecture will take place on Monday, April 29, 2019 between 16:00 17:30 at the Magna Assembly Hall of Faculty of Informatics and Information Technologies STU on Ilkoviova 2 in BratislavaSubject of lecture in Bratislava: From my Nobel Prize to a new KilogramThe International System of Units (SI units) forms the basis for all measurements.
Standards & Metrology Director Mona Alalawi at the Ministry of Industry, Commerce and Tourism, said the unit of kilogramme is one of the basic units in the international system of units, and was defined for more than 120 years as the mass and the international prototype kilogramme made of a platinum/iridium alloy preserved at the headquarters International Bureau of weights and measures located in France.
Representatives of more than 50 countries at the General Conference on Weights and Measures unanimously approved new definitions for the International System of Units, known as SI from its French acronym.
A becquerel is the International System of Units (SI) used to measure radioactivity.
The theme of the day this year is 'Constant evolution of the International System of Units' which has been fixed by the International Bureau of Weights and Measures and the International Organisation of Legal Metrology.
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.

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