(chemistry) hydrogen peroxide

(American spelling, inorganic chemistry) A toxic gas, of molecular formula SO₂ that is found in the emissions of volcanos and those of burning coal or petroleum; dissolves in water to form sulfurous acid and, in the presence of oxygen, sulfuric acid, and is thus responsible for acid rain.

(inorganic chemistry) The binary compound NO₂, a brownish gas that is a poisonous air pollutant; it exists in equilibrium with dinitrogen tetroxide.

a reddish-yellow explosive gas, ClO₂, used as a water disinfectant and to bleach flour and wood pulp

(inorganic chemistry) A black, semiconducting material, CrO₂, having strong magnetic properties; used in recording tapes.

(organic chemistry) The linear oxocarbon having five carbon atoms

(organic chemistry) The linear oxocarbon having three carbon atoms

(organic chemistry) The linear oxocarbon having four carbon atoms

Synonym of calcium peroxide

(inorganic chemistry) The chemical compound PbO₂, a dark-brown solid which is insoluble in water.