noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   arsenic trioxide, arsenious acid uncountable
2. 2
   a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer wordnet

Synonyms

All synonyms

arsenicarsenic trioxidearsenous anhydridearsenous oxideratsbane