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Definition of spontaneous combustion noun from the Oxford Advanced Learner's Dictionary

spontaneous combustion

noun
 
/spɒnˌteɪniəs kəmˈbʌstʃən/
 
/spɑːnˌteɪniəs kəmˈbʌstʃən/
[uncountable]
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  1. the burning of a mineral or vegetable substance caused by chemical changes inside it and not by fire or heat from outside
See spontaneous combustion in the Oxford Advanced American Dictionary
trait
noun
 
 
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