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Definition of fuel-efficient adjective from the Oxford Advanced Learner's Dictionary

fuel-efficient

adjective
 
/ˌfjuːəl ɪˈfɪʃnt/
 
/ˌfjuːəl ɪˈfɪʃnt/
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  1. (of an engine) designed to get as much energy as possible from fuel
    • Modern aircraft are more fuel-efficient than their predecessors.
    Topics Transport by car or lorryc1, The environmentc1
Check pronunciation: fuel-efficient

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