systeme international

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Definition
  1. Proper noun:
    • The International System of Units: A globally recognized, coherent system of measurement based on seven fundamental units from which all other units are derived.
Usage
  • The Systeme International is the modern form of the metric system and is the world's most widely used system of measurement for science, technology, and commerce.
  • It is often abbreviated as SI, which comes from its French name, .
  • It is used to ensure consistency and clarity in measurements worldwide.
Examples
  • Proper noun:
    • All scientific data in the journal must be reported using Systeme International units.
    • The Systeme International defines the second as the duration of a specific number of radiation cycles from a cesium atom.
    • Adopting the Systeme International simplifies international trade and technical communication.
Advanced Usage
  • "SI base units": Refers specifically to the seven fundamental units of the Systeme International: the meter, kilogram, second, ampere, kelvin, mole, and candela.
    • Understanding the seven SI base units is essential for physics.
  • "SI derived units": Refers to units created by combining the base units, such as the newton (kg·m/s²) for force or the joule (kg·m²/s²) for energy.
    • The pascal, an SI derived unit, is used to measure pressure.
Variants and Related Words
  • SI (abbreviation): The standard abbreviation for Systeme International.
    • The speed of light is approximately 299,792,458 m/s in SI units.
  • Metric system: A broader term for a decimal-based system of measurement; the Systeme International is its modern, standardized form.
  • Système International d'Unités (full French name): The original and formal name of the system.
Synonyms
  • International System of Units
  • SI system
  • Modern metric system
Related Phrases
  • "SI prefix": A prefix (like kilo-, centi-, milli-, mega-) used with SI units to denote decimal multiples or submultiples.
    • A kilometer uses the SI prefix 'kilo-' to mean one thousand meters.
  • "Coherent system of units": A system where derived units are products of powers of the base units without numerical factors. The SI is a coherent system.
Noun
  1. 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

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