from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A material with a specific chemical composition.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. material produced by or used in a reaction involving changes in atoms or molecules
Sorry, no etymologies found.
A catalyst is a chemical substance that speeds up, by as much as a billion or even a trillion times, a chemical reaction between other substances, while the catalyst itself emerges from the process unscathed and free to catalyse again.