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Bioavailability - Meaning, Definition & English Examples

Bioavailability refers to the proportion of a substance, such as a drug or nutrient, that enters the bloodstream and is available for the body to use effectively. It measures how well and quickly a substance is absorbed.

bioavailability

/ˌbaɪoʊəˌveɪləˈbɪləti/ /ˌbaɪəʊəˌveɪləˈbɪləti/

Definition:

The extent and rate a substance enters circulation and becomes biologically active.

Synonyms:

absorbability, assimilation, uptake

Part of Speech:

noun

Antonyms:

ineffectiveness, unavailability

Common Collocations:

drug bioavailability, nutrient bioavailability, enhance bioavailability

Derivatives:

bioavailable, bioavailabilities

Usage Tips:

Use "bioavailability" when discussing how well a drug or nutrient is absorbed and utilized by the body.

Common Phrases:

high bioavailability, low bioavailability, improve bioavailability

Etymology:

Derived from "bio-" (life) + "availability," first used in mid-20th century pharmacology.

Examples:

  • 1. The drug's bioavailability determines its effectiveness in treating the condition.
  • 2. Food can affect the bioavailability of certain medications.
  • 3. Scientists study ways to improve nutrient bioavailability in supplements.
  • 4. Low bioavailability means less of the substance reaches the bloodstream.

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