arsenic trioxide

Arsenic trioxide is the most important commercial compound of arsenic, and the main starting material for arsenic chemistry. It is the highly toxic byproduct of certain kinds of ore processing, for example gold mining.
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Noun
1. a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide and weed killer
(synonym) arsenic, arsenous anhydride, arsenous oxide
(hypernym) trioxide

A substance that induces programmed cell death (apoptosis) in certain cancer cells. It belongs to the family of drugs called antineoplastics. 

TRIOSSIDO DI DIARSENICO. ANIDRIDE ARSENIOSA. ARSENICO BIANCO

B: (Kimia) arsenik trioksida
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