an internationally accepted coherent system of physical units, derived from the MKSA (meter-kilogram-second-ampere) system, using the meter, kilogram, second, ampere, kelvin, mole, and candela as the basic units (SI units) respectively of the fundamental quantities of length, mass, time, electric current, temperature, amount of substance, and luminous intensity.
International System of Units n.
A complete, coherent system of units used for scientific work, in which the fundamental quantities are length, time, electric current, temperature, mass, luminous intensity, and amount of substance. Also called International System.
- International telegram
noun 1. a telemessage sent from the UK to a foreign country
noun 1. a Celsius scale for use in measuring temperatures above −183°C in which specified values are assigned to the ice point, steam point, and melting point of gold, silver, and antimony and the boiling point of sulfur and of oxygen.
noun, Pharmacology. 1. an internationally agreed upon standard, as measured by bioassay, to which samples of a substance, as a drug or hormone, are compared to ascertain their relative potency. 2. the particular quantity of such a substance, which causes a specific biological effect. Abbreviation: IU. international unit n. Abbr. IU international unit A unit […]
noun any person well-trained in navigating and using the Internet Word Origin Inter(net) + (astro)naut Usage Note computing slang jargon, World-Wide Web (From “Internet” + “astronaut”) A person who explores the Internet (or “cyberspace”), normally searching for information. (2002-06-30)