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Definition of White arsenic
1. Noun. A white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer.
Exact synonyms: Arsenic, Arsenic Trioxide, Arsenous Anhydride, Arsenous Oxide, Ratsbane
Generic synonyms: Trioxide
Derivative terms: Arsenical
Generic synonyms: Trioxide
Derivative terms: Arsenical
Medical Definition of White arsenic
1. As2O3;dissolves in water to give arsenous acid, H3AsO3; used in the treatment of skin diseases and malaria, and as a tonic; also used externally as a caustic. Synonym: arsenous oxide, white arsenic. (05 Mar 2000)