catalyst
/ˈkætəlɪst/
CEFR level C1Topic ScienceWord #6670 in the learning path
促成变化的人或事
Definitions
n. A person or thing that triggers or accelerates change.
促成变化的人或事
n. A substance that speeds up a reaction without being consumed.
催化剂
Example
That conversation became the catalyst for our neighbourhood cleanup.
那次谈话促成了我们社区的清洁行动。
Investment in public transport can act as a catalyst for wider economic growth in disadvantaged regions.
公共交通投资可以推动欠发达地区更广泛的经济增长。
Collocations
- a catalyst for change
- act as a catalyst
- a chemical catalyst
Word family
- catalytic (adj.)
- catalyse (v.)
- catalysis (n.)
Synonyms
- trigger
Usage tip
比喻推动变化时常用a catalyst for。
FAQ
- What does catalyst mean?
- A person or thing that triggers or accelerates change. A substance that speeds up a reaction without being consumed.
- How is catalyst pronounced?
- UK /ˈkætəlɪst/, US /ˈkætəlɪst/. Use the audio buttons above to listen.
