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Wordnet Dictionary
Noun toxicity has 2 senses
  1. toxicity - the degree to which something is poisonous
    --1 is a kind of     definite quantity
    --1 has particulars: cytotoxicity
  2. perniciousness, toxicity - grave harmfulness or deadliness
    --2 is a kind of unwholesomeness, morbidness, morbidity
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