Student Dictionary

One entry found for catalyst.
Main Entry: cat·a·lyst
Pronunciation: primarystresskat-schwal-schwast
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>

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