|n.||1.||The state of burning.|
|2.||(Chem.) The combination of a combustible with a supporter of combustion, producing heat, and sometimes both light and heat.|
Combustion results in common cases from the mutual chemical action and reaction of the combustible and the oxygen of the atmosphere, whereby a new compound is formed.
|3.||Violent agitation; confusion; tumult.|
|Noun||1.||combustion - a process in which a substance reacts with oxygen to give heat and light|
|2.||combustion - a state of violent disturbance and excitement; "combustion grew until revolt was unavoidable"|
|3.||combustion - the act of burning something; "the burning of leaves was prohibited by a town ordinance"|