catalyst
英 ['k?t(?)l?st]
美['k?t?l?st]
- n. [物化] 催化劑；刺激因素
英英釋意
- 1. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
- 2. something that causes an important event to happen;
- "the invasion acted as a catalyst to unite the country"