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biodistribution
This term is used almost exclusively within pharmacological, toxicological, and biomedical research. It describes the movement of a substance from the site of administration to various tissues, focusing on the quantitative spread across the body rather than the metabolic breakdown of the substance.
In a technical context, it is often contrasted with "clearance" or "excretion," which refer to the removal of the substance from the body. Because it describes a biological process or a specific set of data, it is treated as an uncountable noun in most scientific literature.
Meanings
The process by which a substance, such as a drug or a radioactive tracer, is distributed throughout the various tissues and organs of a living organism after administration.