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Definition of catalysis


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ca·tal·y·sis  audio  (k-tl-ss) KEY  

NOUN:
pl. ca·tal·y·ses   (-sz) KEY  
The action of a catalyst, especially an increase in the rate of a chemical reaction.

ETYMOLOGY:
Greek katalusis, dissolution, from katalein, to dissolve : kata-, intensive pref. ; see cata- + lein, to loosen; see leu- in Indo-European roots


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The American Heritage® Dictionary of the English Language, Fourth Edition.
Copyright © 2000 by Houghton Mifflin Company.
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