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Definition of Arsenous anhydride
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 Oxide, Ratsbane, White Arsenic
Generic synonyms: Trioxide
Derivative terms: Arsenical
Generic synonyms: Trioxide
Derivative terms: Arsenical