One entry found for catalyst.

Main Entry: cat·a·lyst
Pronunciation: kat-l-st
Function: noun
1 : a substance that changes the rate of a chemical reaction but is itself unchanged at the end of the process; especially : such a substance that speeds up a reaction or enables it to proceed under milder conditions
2 : someone or something that causes or speeds significant change or action <the group was a catalyst for social reform>

Pronunciation Symbols