arsenic trioxide


nounChemistry.
  1. a white, tasteless, amorphous, slightly water-soluble, poisonous powder, As2O3, used chiefly in the manufacture of pigments and glass and as an insecticide or weed-killer; arsenous acid.

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British Dictionary definitions for arsenic trioxide

arsenic trioxide

noun
  1. a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As 2 O 3: Also called: arsenic

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