international unit

noun
|Updated on: 29 Jun 2018

Definition of international unit

: a quantity of a biologically active substance (such as a vitamin) that produces a particular biological effect agreed upon as an international standard

Recent Examples of international unit from the Web

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First Known Use of international unit

1921

in the meaning defined above

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Medical Dictionary

international unit

noun

medical Definition of international unit

: the amount of specific physiological activity of a standardized preparation (as of a vitamin) that is agreed upon as an international standard especially for comparison with other biologicals containing the substance in impure form or with a related biologically active substance; also : the amount of the biologically active substance in the standard amount of the preparation producing this activity

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