https://doi.org/10.1351/goldbook.14470
Progressive increase in the amount of a substance in an organism or part of an organism that occurs because the rate of intake from all contributing sources and by all possible routes exceeds the organism’s ability to eliminate the substance from its body.
Note: Bioaccumulation of organic molecules usually correlates with lipophilicity. Bioaccumulation of metal ions tends to correlate with strong binding to biomolecules or incorporation into bone and teeth.
See also: bioconcentration, biomagnification