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WordReference Random House Learner's Dictionary of American English © 2024com•bus•tion /kəmˈbʌstʃən/USA pronunciation n. [uncountable]- Physicsthe act or process of burning:combustion of fuel and air in a chamber.
com•bus•tive, adj. WordReference Random House Unabridged Dictionary of American English © 2024com•bus•tion (kəm bus′chən),USA pronunciation n. - Physicsthe act or process of burning.
- Chemistry
- rapid oxidation accompanied by heat and, usually, light.
- chemical combination attended by production of heat and light.
- slow oxidation not accompanied by high temperature and light.
- violent excitement;
tumult.
- Late Latin combūstiōn- (stem of combūstiō). See combust, -ion
- Middle French)
- late Middle English (1400–50
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