BaCuSi₄O₁₀, the pigment Chinese blue / Han blue; BaO·CuO·(SiO₂)₄

(inorganic chemistry) CaCuSi₄O₁₀, the pigment Egyptian blue; CaO·CuO·(SiO₂)₄

a family of artificial pigments / artificial jade, a barium glass

(organic chemistry) The (normally reversible) thermal isomerization of a 1,5-diene to yield a more stable regioisomer

plural of Cope rearrangement

plural of carbonless copy paper

(mineralogy) dioptase

chalcopyrite

A red nose resulting from alcoholism.

cupronickel