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Definition of toxicity noun from the Oxford Advanced American Dictionary

     

    toxicity

     noun
    noun
    NAmE//tɑkˈsɪsət̮i//
     
    (pl. toxicities) (technology)
     
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  1. 1[uncountable] the quality of being poisonous; the extent to which something is poisonous substances with high levels of toxicity
  2. 2[countable] the effect that a poisonous substance has Minor toxicities of this drug include nausea and vomiting.
See the Oxford Advanced Learner's Dictionary entry: toxicity