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Biological Half-Life
(redirected from Metabolic half life)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
half-life (haf´līf) the time required for the decay of half of a sample of particles of a radionuclide or elementary particles; symbol t 1/2 or T 1/2.
antibody half-life  a measure of the mean survival time of antibody molecules following their formation, usually expressed as the time required to eliminate 50 per cent of a known quantity of immunoglobulin from the animal body. Half-life varies from one immunoglobulin class to another.
biological half-life  the time required for a living tissue, organ, or organism to eliminate one-half of a radioactive substance which has been introduced into it.

biological half-life
n.
See half-life.

Biological Half-Life
Biology The time required for one half of the total amount of a particular substance in a biological system to be degraded by biological processes when the rate of removal is nearly exponential
Nuclear physics The length of time required for one half of a radioactive substance to be biologically eliminated from the body

biological half-life
T1/2 Biology The time required for 1⁄2 of the total amount of a particular substance in a biologic system to be degraded by biological processes when the rate of removal is nearly exponential Radiation physics The length of time required for1/2 of a radioactive substance to be biologically eliminated from the body


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