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international unit
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noun Pharmacology.
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.
the particular quantity of such a substance, which causes a specific biological effect. Abbreviation: IU
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Origin of international unit
First recorded in 1920â25
Words nearby international unit
International Telecommunications Satellite Organization, International Telecommunications Union, international telegram, international temperature scale, International Union for Conservation of Nature, international unit, International Workingmen's Association, interne, internecine, internee, internegative
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use international unit in a sentence
Scientific definitions for international unit
international unit
A unit for measuring a biologically active substance, such as a hormone or vitamin.
The American HeritageÂź Science Dictionary
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