(obsolete, inorganic chemistry) The compound arsenic trichloride.

plural of arsenical bronze

(inorganic chemistry) A colourless oily liquid, AsCl₃, used in the synthesis of organic arsenic compounds

(chemistry) An industrially important and highly toxic oxide of arsenic that occurs as the mineral claudetite; formula As₂O₃ (though in liquid, gaseous and some solid forms it has molecules of the form As₄O₆).

Alternative spelling of arsenic trisulfide

(inorganic chemistry) The bright yellow sulfide of arsenic, As₂S₃, that occurs as the mineral orpiment, and has been used as a pigment

(mineralogy) The mineral arsenopyrite.

(inorganic chemistry) The binary compound of arsenic and chlorine AsCl₅

arsenic trioxide, arsenious acid

(politics, figuratively) The United States of America, as supplier of extensive materiel support to U.S. allies during World War II; or post-war U.S. as the manufacturer and possessor of the greatest quantity of advanced military weaponry in the world, in the service of defending democratic forms of government.