GEMET
General
Multilingual
Environmental
Thesaurus
catalyst
Definition

A substance whose presence alters the rate at which a chemical reaction proceeds, but whose own composition remains unchanged by the reaction. Catalysts are usually employed to accelerate reactions(positive catalyst), but retarding (negative) catalysts are also used.

Other relations
Scope note

Scope note is not available.

Concept URL: http://www.eionet.europa.eu/gemet/concept/1210