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English definition of “toxicity”

toxicity

noun [U] /tɒkˈsis.i.ti/ us  /taːkˈsis.ə.ti/ specialized
the level of poison contained in a drug, or the ability of a drug to poison the body: The patient displays signs of hypothyroidism due to drug toxicity. Tests of the chemical have shown that it has a high level of toxicity. The toxicity of the drug severely limits its use.
(Definition of toxicity from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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