AskDefine | Define ignition

Dictionary Definition



1 the process of initiating combustion
2 the mechanism that ignites the fuel in an internal-combustion engine [syn: ignition system]
3 the act of setting on fire or catching fire [syn: firing, lighting, kindling, inflammation]

User Contributed Dictionary



  1. The act of igniting
  2. The initiation of combustion


Extensive Definition

Ignition occurs when the heat produced by a reaction becomes sufficient to sustain a chemical reaction. The sudden change from a cold gas to a hot plasma in a plasma source is also called ignition.
See also: Making fire
Other uses of ignition include:
  • in chemistry, it refers to heating a material to the point that it spontaneously combusts, or until it ceases to lose mass.
  • in nuclear fusion, it refers to the conditions under which a plasma can be maintained by fusion reactions without external energy input.
  • in semiconductor processing, ignition is the process of starting up a plasma generator. In DC plasma systems, this involves a transition from voltaic arcing to sustained and delocalized plasma generation.
  • an ignition system is a method for activating and controlling the combustion of fuel in an internal combustion engine, often through the use of a key
Ignition may also refer to:
ignition in German: Zündung
ignition in Spanish: Ignición
ignition in Polish: Zapłon
ignition in Swedish: Tändning

Synonyms, Antonyms and Related Words

altitude peak, automatic control, backfire, balefire, beacon, beacon fire, blast-off, blaze, bonfire, burn, burning ghat, burnout, campfire, ceiling, cheerful fire, combustion, conflagration, corposant, cozy fire, crackling fire, crematory, death fire, descent, end of burning, fen fire, fire, firing, flame, flammation, flashing point, flicker, flickering flame, flight, forest fire, fox fire, funeral pyre, ignis fatuus, impact, inflammation, ingle, kindling, lambent flame, launch, lift-off, lighting, lighting up, marshfire, open fire, prairie fire, pyre, raging fire, rocket launching, sea of flames, sheet of fire, shoot, shot, signal beacon, smudge fire, three-alarm fire, trajectory, two-alarm fire, velocity peak, watch fire, wildfire, witch fire
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