arsenic trioxide


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.

British Dictionary definitions for arsenic trioxide

arsenic trioxide

noun

a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As 2 O 3 Also called: arsenic