bio·ac·cu·mu·la·tion (b   - -ky my-l  shn)n. The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism: the bioaccumulation of mercury in fish. bi o·ac·cumu·lative adj. |
| bioaccumulation (b--kymy-lshn) The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism. Bioaccumulation takes place within an organism when the rate of intake of a substance is greater than the rate of excretion or metabolic transformation of that substance. Compare biomagnification. |
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