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[bahy-oh-uh-vey-luh-bil-i-tee] /ˌbaɪ oʊ əˌveɪ ləˈbɪl ɪ ti/
noun, Biochemistry.
the extent to which a nutrient or medication can be used by the body.
Origin of bioavailability
First recorded in 1965-70; bio- + availability
Related forms
bioavailable, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for bioavailability


the extent to which a drug or other substance is taken up by a specific tissue or organ after administration; the proportion of the dose of a drug that reaches the systemic circulation intact after administration by a route other than intravenous Also called systemic availability
Derived Forms
bioavailable, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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bioavailability in Medicine

bioavailability bi·o·a·vail·a·bil·i·ty (bī'ō-ə-vā'lə-bĭl'ĭ-tē)
The physiological availability of a given amount of a drug, as distinct from its chemical potency.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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