a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As2O3
Also called: arsenic
arsenic trioxide in American English
noun
Chemistry
a white, tasteless, amorphous, slightly water-soluble, poisonous powder, As2O3, used chiefly in the manufacture of pigments and glass and as an insecticide or weed-killer; arsenous acid
Also called: arsenic
Examples of 'arsenic trioxide' in a sentence
arsenic trioxide
Treatments used arsenic right up until the 1950s when tablets still contained one-eighth grain of arsenic trioxide.