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- DictionaryCat·a·lyst/ˈkadləst/
noun
- 1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change: "chlorine acts as a catalyst promoting the breakdown of ozone"
The meaning of CATALYST is a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible. How to use catalyst in a sentence.
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. catalyst. In chemistry, a substance that causes a chemical reaction to occur but is not itself involved in the reaction.
catalyst. noun [ C ] us / ˈkæt̬· ə l·ɪst /. Add to word list. Add to word list. a condition, event, or person that is the cause of an important change. biology, chemistry. A catalyst is also a substance that causes or speeds a chemical reaction without itself being changed.
a condition, event, or person that is the cause of an important change. biology, chemistry. A catalyst is also a substance that causes or speeds a chemical reaction without itself being changed. (Definition of catalyst from the Cambridge Academic Content Dictionary © Cambridge University Press)
catalyst (for something) a person or thing that causes a change. I see my role as being a catalyst for change. The riots were later seen as the catalyst for the new political developments. Definition of catalyst noun in Oxford Advanced Learner's Dictionary.
Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed. Enzymes are naturally occurring catalysts responsible for many essential biochemical reactions. In general, catalytic action is a chemical reaction between the catalyst and a reactant.
Add to word list. someone or something that causes change: Recent riots and suicides have acted as a catalyst for change in the prison system. a substance that makes a chemical reaction happen more quickly.
catalyst. ( ˈkætəlɪst) n. 1. (Chemistry) a substance that increases the rate of a chemical reaction without itself suffering any permanent chemical change. Compare inhibitor 2. 2. a person or thing that causes a change.
something that causes activity between two or more persons or forces without itself being affected. a person or thing that precipitates an event or change: His imprisonment by the government served as the catalyst that helped transform social unrest into revolution.
5 days ago · A catalyst is an agent or compound that is added to a process to make a chemical reaction happen more quickly. The catalyst can increase the reaction rate of the steam and can participate in the secondary reactions. The packing can also act as a catalyst to enhance desired chemical transformations.
