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catalyst

['kæt(ə)lɪst] s
quím. catalizatór m
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 ['kæt(ə)lɪst] s
ambient. catalizatór m
 Inglés tesauro
catalyst ['kæt(ə)lɪst] abbr.
abrev., polím. cat
catalyst
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