Canadian Medical Guide > Physical Sciences > Natural Sciences > Time > Half-Life Terms and Definitions
Half-Life
Medical Definition: | The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacologic, physiologic, or radiologic activity. |
Guide Notes: | almost never IM; no qualif; may refer to radioactivity, metabolized substances or cells |
Previously Indexed: | Time (1966-1970),specific radioisotope, substance, or cell |
Half-Life Medical Definitions and Terms
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