noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The extent to which a substance is molecularly available to cells and tissues in a living organism, which depends on factors such as solubility, pH level, and presence of enzymes and cofactors; for example, even if one's ingestion of vitamin B₁₂ is average/typical, one might nonetheless have B₁₂ deficiency if one has poor metabolism of this particular vitamin. countable, uncountable
2. 2
   The extent to which a substance is molecularly available to cells and tissues in a living organism, which depends on factors such as solubility, pH level, and presence of enzymes and cofactors; for example, even if one's ingestion of vitamin B₁₂ is average/typical, one might nonetheless have B₁₂ deficiency if one has poor metabolism of this particular vitamin.; The amount of drug or nutrient which reaches the site of physiological activity after administration. countable, uncountable

   "poor/low oral bioavailability"

Synonyms

All synonyms

biodisponibility

Etymology

From bio- + availability.

Related phrases

bio unavailable

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.