1 (chemistry) a substance which causes or assists a chemical change in another substance without itself undergoing any permanent chemical change: Silver is used as a catalyst to convert ethylene into ethylene oxide.
az: katalizator
ru: катализатор
2 someone or something that helps bring about a change: The crisis has acted as a catalyst for long overdue reforms.
az: katalizator
ru: катализатор
English-Azerbaijani dictionary