The state of being capable of being absorbed and available to interact with the metabolic processes of an organism. Typically a function of chemical properties, physical state of the material to which an organism is exposed, and the ability of the individual organism to physiologically take up the chemical. Also, the term used for the fraction of the total chemical in the environmental which is available for uptake by organisms. (AIHA 2000)

Petroleum refining glossary. 2013.

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  • Bioavailability — In pharmacology, bioavailability (BA) is a subcategory of absorption and is used to describe the fraction of an administered dose of unchanged drug that reaches the systemic circulation, one of the principal pharmacokinetic properties of drugs.… …   Wikipedia

  • bioavailability — noun Date: 1971 the degree and rate at which a substance (as a drug) is absorbed into a living system or is made available at the site of physiological activity • bioavailable adjective …   New Collegiate Dictionary

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  • bioavailability — Relative amount of a drug (or other substance) that will reach the systemic circulation when administered by a route other than direct intravenous injection …   Dictionary of molecular biology

  • bioavailability — bioavailable, adj. /buy oh euh vay leuh bil i tee/, n. Biochem. the extent to which a nutrient or medication can be used by the body. [1965 70; BIO + AVAILABILITY] * * * …   Universalium

  • bioavailability — noun The amount of drug which reaches the site of physiological activity after administration. See Also: bio unavailable …   Wiktionary

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  • Bioavailability — Bi|o|a|vail|a|bi|li|ty [baɪɔɔveɪlɔ bɪlɪtɪ; bio ; engl. availability = Verfügbarkeit], die; , …ities: svw. ↑ Bioverfügbarkeit …   Universal-Lexikon

  • bioavailability — n. extent and rate which a drug (or other substance) is absorbed and becomes available in a physiologically active form …   English contemporary dictionary

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