A substance that diminishes the rate of a chemical reaction; the process is called @[email protected] Inhibitors are sometimes called negative catalysts, but since the action of an inhibitor is fundamentally different from that of a @[email protected], this terminology is discouraged. In contrast to a @[email protected], an inhibitor may be consumed during the course of a reaction. In enzyme-catalysed reactions an inhibitor frequently acts by binding to the enzyme, in which case it may be called an enzyme inhibitor.
See also:
PAC, 1993, 65, 2291. (Nomenclature of kinetic methods of analysis (IUPAC Recommendations 1993)) on page 2295 [Terms] [Paper]