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Noun: arsenous oxide  'aa(r)sunus 'óksId
  1. A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
    - arsenic, arsenic trioxide, arsenous anhydride, white arsenic, ratsbane

Derived forms: arsenous oxides

Type of: trioxide

Encyclopedia: Arsenous oxide