Compound that is not organic: i.e. does not contain carbon with exceptions e.g. CO, carbon dioxide, disulfide and diselenide, carbides, HCN, carbonic acid, cyanic, isocyanic and fulminic acids and carbonates, hydrogen carbonates, cyanides, cyanates
An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds—that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as inorganic chemistry. Wikipedia