|1.||Compare inhibitor a substance that increases the rate of a chemical reaction without itself suffering any permanent chemical change|
|2.||a person or thing that causes a change|
catalyst cat·a·lyst (kāt'l-ĭst)
A substance, usually used in small amounts relative to the reactants, that modifies and increases the rate of a reaction without being consumed in the process.
|catalyst (kāt'l-ĭst) Pronunciation Key
A substance that starts or speeds up a chemical reaction while undergoing no permanent change itself. The enzymes in saliva, for example, are catalysts in digestion.
catalytic adjective (kāt'l-ĭt'ĭk)