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Dictionary

com•bus•tion

Pronunciation: (kum-bus'chun), [key]
—n.
1. the act or process of burning.
2. Chem.
a. rapid oxidation accompanied by heat and, usually, light.
b. chemical combination attended by production of heat and light.
c. slow oxidation not accompanied by high temperature and light.
3. violent excitement; tumult.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

combustible

combustion chamber

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