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| com·bus·tion [ kəm búschən ] |
noun |
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| Definition: |
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1. ignition: the burning of fuel in an engine to provide power
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2. chemical reaction: a chemical process in which a substance reacts vigorously with oxygen to produce heat and light, seen as a flame
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3. extreme agitation: a state of extreme discontent and agitation
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| [15th century. < Latin combustus, past participle of comburere "burn up" < urere "to burn"] |
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  com·bus·tive adjective |
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