bioavailability

noun

bio·​avail·​abil·​i·​ty ˌbī-(ˌ)ō-ə-ˌvā-lə-ˈbi-lə-tē 

: 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

bioavailable

ˌbī-(ˌ)ō-ə-ˈvā-lə-bəl 

adjective

Examples of bioavailability in a Sentence

Recent Examples on the Web

The two methods studied by the university researchers include a faster method measuring calcium digestibility in the small intestine, and the older and more time-consuming method of measuring bioavailability using ash or mineral content of a chicken's leg bone. —Arkansas Online, 28 Aug. 2025

Cooking beta carotene-rich foods may increase the bioavailability of this nutrient. —Carrie Madormo, Verywell Health, 26 Aug. 2025

Consider adding a pinch of black pepper or a sprinkle of coconut oil to boost curcumin's bioavailability. —Emmanuella Ogbonna, Health, 25 Aug. 2025

The age of the source does determine a secretome’s potency, but will the boosted bioavailability of an autologous stem cell make up for that? —Jessica Ourisman, Forbes.com, 11 Aug. 2025

Word History

First Known Use

1961, in the meaning defined above

Rhymes for bioavailability

• communicability
• comprehensibility
• deliverability
• differentiability
• impenetrability
• impermeability
• impracticability
• inaccessibility
• inadmissibility
• inapplicability
• incompatibility
• indestructibility

Medical Definition

bioavailability

noun

bio·​avail·​abil·​i·​ty -ə-ˌvā-lə-ˈbil-ət-ē 

plural bioavailabilities

: 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

-ˈvā-lə-bəl 

adjective