catalyst

noun

/ˈkætəlɪst/

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(chemistry) a substance that makes a chemical reaction happen faster without being changed itself
- Chlorine will act as a catalyst.
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Topics Physics and chemistryc2
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.

Word Originearly 20th cent.: from catalysis, ‘the acceleration of a chemical reaction by a catalyst’, on the pattern of analyst.

单词	catalyst
释义	catalyst noun /ˈkætəlɪst/ /ˈkætəlɪst/ jump to other results (chemistry) a substance that makes a chemical reaction happen faster without being changed itself Chlorine will act as a catalyst. Wordfinder acid catalyst chemistry compound formula molecule pH react solution valency Topics Physics and chemistryc2 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. Word Originearly 20th cent.: from catalysis, ‘the acceleration of a chemical reaction by a catalyst’, on the pattern of analyst.
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