toxicity

  

Definition

Sum of adverse effects or the degree of danger posed by a substance to living organisms. It is expressed generally as a dose response relationship involving the quantity of substance to which the organism is exposed and the route of exposure skin (absorption), mouth (ingestion), or respiratory tract (inhalation). Toxicity is classified usually as (1) Acute: harmful effects produced through a single or short-term exposure. (2) Chronic: harmful effects produced through repeated or continuous exposure over an extended period. (3) Subchronic: harmful effects produced through repeated or continuous exposure over twelve months or more but less than the normal lifespan of the organism.

Use toxicity in a sentence

  • Knowing the toxicity levels of the different chemicals you are working with will let you know how to best handle them.

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  • The toxicity of the city's air after the factory opened increased by five hundred percent, and debates began as to whether it should be closed down.

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  • My Chemistry teacher taught me not to use a specific substance because of the toxicity rate it had with other chemicals.

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