bio·​avail·​abil·​i·​ty | \ ˌbī-(ˌ)ō-ə-ˌvā-lə-ˈbi-lə-tē How to pronounce bioavailability (audio) \

Definition of bioavailability

: the degree and rate at which a substance (such as a drug) is absorbed into a living system or is made available at the site of physiological activity

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Other Words from bioavailability

bioavailable \ ˌbī-​(ˌ)ō-​ə-​ˈvā-​lə-​bəl How to pronounce bioavailability (audio) \ adjective

Examples of bioavailability in a Sentence

Recent Examples on the Web Another chemical reduces the bioavailability of nutrients suspended in the lake water, effectively starving the algae. Brian Maffly, The Salt Lake Tribune, "Can chemical treatments reduce toxic algal blooms on Utah Lake?," 27 Aug. 2020 Dicke and his colleagues are now testing how varying the insects’ diets can influence the bioavailability of nutrients such as iron and zinc for the humans that will eventually consume the invertebrates. Marta Zaraska, Discover Magazine, "Raising the Steaks: How One City in the Netherlands Wants to Feed the World," 13 Mar. 2019 Scientifically speaking, the bioavailability in ingesting CBD is pretty low. Kelly Dobkin, Bon Appetit, "How Drinking CBD Cocktails Really Makes You Feel," 22 June 2018 The state chose not to factor bioavailability into its initial screening. Rob Davis,, "Why Oregon's new clean air law may not clean the air," 17 Mar. 2018 A Spanish study team examined the effect of six different cooking methods on the activity and bioavailability of several antioxidants in 20 different vegetables. Markham Heid, Time, "You Asked: What Is the Healthiest Way to Cook Vegetables?," 19 July 2017 Levodopa, the standard therapy for Parkinson’s disease, must be taken multiple times per day in order to maintain a sufficient level of the drug in the blood (bioavailability) for the body to use. Steven Edwards, WIRED, "Parkinson’s Patch Approved by FDA," 10 May 2007

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bioavailability.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of bioavailability

1961, in the meaning defined above

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Time Traveler for bioavailability

Time Traveler

The first known use of bioavailability was in 1961

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Cite this Entry

“Bioavailability.” Dictionary, Merriam-Webster, Accessed 5 Mar. 2021.

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More Definitions for bioavailability


bio·​avail·​abil·​i·​ty | \ -ə-ˌvā-lə-ˈbil-ət-ē How to pronounce bioavailability (audio) \
plural bioavailabilities

Medical Definition of bioavailability

: 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

Other Words from bioavailability

bioavailable \ -​ˈvā-​lə-​bəl How to pronounce bioavailability (audio) \ adjective

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