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  1. Dictionary
    catalyst
    /ˈkatəlɪst/

    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"

    More definitions, origin and scrabble points

  2. In Chemistry, catalysts are defined as those substances which alter the rate of reaction by changing the path of reaction. Most of the time, a catalyst is used to speed up or increase the rate of the reaction.

  3. CATALYST definition: 1. something that makes a chemical reaction happen more quickly without itself being changed 2. an…. Learn more.

  4. 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.

  5. Jun 4, 2024 · 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.

  6. A catalyst is an event or person causing a change. Getting kicked out of your parents' house might be a catalyst for becoming more independent.

  7. a condition, event, or person that is the cause of an important change. biology, chemistry.

  8. 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.

  9. Catalyst definition: 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.

  10. 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.

  11. 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.