Combustion means "the act of burning," like the combustion of fallen leaves that, if not extinguished immediately, can result in a forest fire.

Combustion derives from the Latin word comburere, which means "to burn up." Matches, kindling, paper, and lighter fluid can be tools for combustion. In chemistry terms, combustion is any process in which a substance combines with oxygen to produce heat and light. Cars run because their engines use combustion to get the cylinders to fire.

Definitions of combustion

n a process in which a substance reacts with oxygen to give heat and light

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combustion that propagates through a gas or along the surface of an explosive at a rapid rate driven by the transfer of heat
fire, flame, flaming
the process of combustion of inflammable materials producing heat and light and (often) smoke
internal combustion
the combustion of fuel inside a cylinder (as in an internal-combustion engine)
blaze, blazing
a strong flame that burns brightly
a sudden burst of flame
the process of initiating combustion or catching fire
Type of:
oxidation, oxidisation, oxidization
the process of oxidizing; the addition of oxygen to a compound with a loss of electrons; always occurs accompanied by reduction

n the act of burning something

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arson, fire-raising, incendiarism
malicious burning to destroy property
firing, ignition, inflammation, kindling, lighting
the act of setting something on fire
the act of burning something completely; reducing it to ashes
the incineration of a dead body
Type of:
change of integrity
the act of changing the unity or wholeness of something

n a state of violent disturbance and excitement

combustion grew until revolt was unavoidable”
Type of:
garboil, tumult, tumultuousness, uproar
a state of commotion and noise and confusion

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