anticatalyst (chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst
activator (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription
chemical science,
chemistry the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
biocatalyst a biochemical catalyst such as an enzyme
enzyme any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
catalyst -
something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"
catalyst 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.\n(Source: ALL)
catalyst A substance which speeds up chemical reactions.
