(chemistry) any compound formally derived from another (or from others) by the loss of a water molecule, especially acid anhydrides

plural of anhydride

(organic chemistry) An acid anhydride.

(organic chemistry) A class of organic compounds having two acyl groups bonded to the same oxygen atom. They react with water to give carboxylic acids.

(organic chemistry) The acid anhydride of phthalic acid; manufactured by the oxidation of xylene or naphthalene, widely used in the synthesis of dyes, insecticides, plasticizers and pharmaceuticals.

(chemistry) any compound, of general formula RS(=O)-O-S(=O)R, that is an acid anhydride of a sulfinic acid

Alternative spelling of sulfonic anhydride

Alternative spelling of sulfinic anhydride

(chemistry) any compound, of general formula RS(=O)₂OS(=O)₂R, that is the acid anhydride of a sulfonic acid

(obsolete, inorganic chemistry) carbon dioxide