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combustion

com·bus·tion

combustion

pronunciation:
km buhs chn
part of speech: noun
definition 1: the act or process of burning.
similar words:
burning
definition 2: the process of oxidation, usu. accompanied by heat and light.
definition 3: violent disturbance, turmoil, or upheaval.
The combustion of the crowd led to a riot.
derivation: combustive (adj.)