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

Rather, research shows that both forms of creatine have similar bioavailability, meaning the body can easily absorb and use them.9 Creatine nitrate is a newer form of creatine, so it has not been as extensively studied as creatine monohydrate. —Emmanuella Ogbonna, Health, 12 Aug. 2025

The term ‘bioavailability’ refers to how much of a drug actually reaches the bloodstream. —Paul McClure 13, New Atlas, 13 Feb. 2025

Some curcumin supplements are encapsulated with substances (e.g., coconut oil) that improve their bioavailability. —Sarah Bence, Verywell Health, 21 May 2025

The formulation can affect how well your body absorbs CoQ10, also known as its bioavailability. —Lindsay Curtis, Verywell Health, 14 July 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