Toxicity is the degree to which something is able to produce illness or damage to an exposed organism. Toxicity can refer to the effect on a whole
organism, such as a human or a
bacterium or a plant, or to a substructure, such as a
cell (cytotoxicity) or an organ (organotoxicity such as the
liver (hepatotoxicity). By extension, the word may be
metaphorically used to describe toxic effects on larger and more complex groups, such as the family unit or "society at large".
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A single exposure to a toxic substance which may result in severe biological harm or death. Acute exposures are usually characterized as lasting no longer than a day, as compared to longer, continuing exposure over a period of time.
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