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Noun: arsenic  aa(r)-su-nik
  1. A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
    - arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic, ratsbane
     
  2. A very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and in various alloys; found in arsenopyrite and orpiment and realgar
    - As, atomic number 33

Derived forms: arsenics

Type of: chemical element, element, trioxide

Part of: arsenopyrite, herbicide, insect powder, insecticide, mispickel, orpiment, realgar, weed killer, weedkiller

Encyclopedia: Arsenic