White arsenic Meaning, Definition & Usage
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noun a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer
arsenous oxide; arsenous anhydride; arsenic; ratsbane; arsenic trioxide.
WordNet
Definitions
(Chem.) , arsenious oxide,As2O3 , a substance of a white color, and vitreous adamantine luster, having an astringent, sweetish taste. It is a deadly poison.