LEARNit Dictionary
spontaneous combustion
noun
/spɒnˌteɪniəs kəmˈbʌstʃən/
UK
/spɑːnˌteɪniəs kəmˈbʌstʃən/
US
1
the burning of a mineral or vegetable substance caused by chemical changes inside it and not by fire or heat from outside
احتراق خودبهخودی, احتراق خود به خود