arsenic trioxide

noun, Chemistry
1.
a white, tasteless, amorphous, slightly water-soluble, poisonous powder, As 2 O 3 , used chiefly in the manufacture of pigments and glass and as an insecticide or weed-killer; arsenous acid.
Also called arsenic.
Examples from the web for arsenic trioxide
  • Nearly all domestic imports were in compound form, primarily as arsenic trioxide, although some arsenic metal was also imported.
British Dictionary definitions for arsenic trioxide

arsenic trioxide

noun
1.
a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As2O3 Also called arsenic