Meaning of CATALYST in English

CATALYST

noun Date: 1902 a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible, an agent that provokes or speeds significant change or action

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.