combustion

Definitions

General English

General Science

Aviation

  • noun burning, especially that which takes place in an engine

Cars & Driving

  • noun extremely rapid (but not explosive) burning of the air/fuel mixture timed to occur when the piston is at the top of its stroke, so that it is forced down to turn the crankshaft

Construction

  • A rapid chemical process, such as oxidation, that produces significant thermal energy (heat), and usually light as well.
http://www.dictionarycentral.com/definition/combustion.html