Definition of auto-ignition in English:

auto-ignition

noun

  • 1Spontaneous ignition of a combustible mixture, without an external source of ignition (such as a flame or spark); specifically this event in an internal-combustion engine.

  • 2Automated ignition; a mechanism that ignites a gas jet or burner automatically.

Origin

Early 20th century. From auto- + ignition.

Pronunciation

auto-ignition

/ˌɔːtəʊɪɡˈnɪʃn/