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Arsenic trioxide

noun

Definitions

Noun
  1. 1
    An industrially important and highly toxic oxide of arsenic that occurs as the mineral claudetite; formula As₂O₃ (though in liquid, gaseous and some solid forms it has molecules of the form As₄O₆). uncountable
  2. 2
    a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer wordnet

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