[ad_1] noun Chemistry.
  1. Also called arseniuretted hydrogen. a colorless, flammable, slightly water-soluble gas, AsH3, having a fetid, garliclike odor, used in chemical warfare.
  2. any derivative of this compound in which one or more hydrogen atoms are replaced by organic groups.


  1. a colourless poisonous gas used in the manufacture of organic compounds, to dope transistors, and as a military poisonous gas. Formula: AsH 3
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