Ignition

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" or "Ignite (disambiguation)

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 (song), a hip hop song by artist R. Kelly
* Ignition, Portable Sounds, a christian rock/hip hop song by tobyMac
* Ignition (Trivium song), a song by American metal band Trivium
* Ignition (album), an album by the punk rock band The Offspring
* Ignition (computer game), a top-down racing game for PC published in 1997
* Ignition (event), a Burning Man regional event held in Montreal, Quebec
* Ignition (film), a 2001 film
* Ignition Entertainment, a computer video games company founded in 2002