Meaning of CATALYST in English

CATALYST

(~s)

1.

You can describe a person or thing that causes a change or event to happen as a ~.

I very much hope that this case will prove to be a ~ for change...

He said he saw the bank’s role as a ~ to encourage foreign direct investment.

N-COUNT: oft N for n

2.

In chemistry, a ~ is a substance that causes a chemical reaction to take place more quickly.

N-COUNT

Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .