Definition of spontaneous combustion in English:

spontaneous combustion

noun

  • The ignition of organic matter (e.g., hay or coal) without apparent cause, typically through heat generated internally by rapid oxidation.

    • ‘Investigators have ruled out any form of spontaneous combustion of the chemical, which is known to be relatively stable in the absence of any detonator.’
    • ‘There were no arrows of fire, only a spontaneous combustion from within the huts and houses.’
    • ‘To better ventilate the haymows and prevent spontaneous combustion of freshly cut hay, he designed the side walls of two of the barns to end about 3 feet below the eaves.’

Pronunciation:

spontaneous combustion

/spänˈtānēəs kəmˈbəsCHən/