noun
1. : an acid (as ortho-arsenious acid H 3 AsO 3 ) derived from arsenic trioxide known only in solution and especially in the form of salts (as sodium arsenite)
2. : arsenic trioxide
noun
1. : an acid (as ortho-arsenious acid H 3 AsO 3 ) derived from arsenic trioxide known only in solution and especially in the form of salts (as sodium arsenite)
2. : arsenic trioxide
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012