触媒(しょくばい)

しょくばい
noun
catalyst
formaltechnicalacademicscience
1. catalyst
A substance that speeds up a chemical reaction without being consumed in the process.
触媒(しょくばい)を加(くわ)える。
Add a catalyst.
酵素(こうそ)は生体(せいたい)内(ない)の触媒(しょくばい)として働(はたら)く。
Enzymes function as catalysts within living organisms.
A catalytic converter is needed to purify car exhaust gases.
2. catalyst, trigger
Figuratively, a person or event that triggers or accelerates change.
あの事件(じけん)が触媒(しょくばい)になった。
That incident served as a catalyst.
Her single remark became the catalyst for change.
Social media is functioning as a catalyst for social movements.

Forms

触(しょく) (touch, contact) + 媒(ばい) (intermediary, medium)

USAGE (Sense 1):
A fundamental concept in chemistry. A 触媒(しょくばい) enables or speeds up a reaction while remaining unchanged itself.

USAGE (figurative):
Used in news, essays, and formal writing to describe something that triggers or accelerates a process of change.

Common collocations