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English definition of “fuel”

fuel

noun [C/U]  /ˈfju·əl, fjul/ us  
a substance such as oil or gas that is used to provide heat or power, usually by being burned

fuel

verb [T]  /ˈfju·əl, fjul/ us  
to provide power to something: The heating system is fueled by natural gas.
(Definition of fuel from the Cambridge Academic Content Dictionary © Cambridge University Press)
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