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\ ˈhī-ˈfī 
\
\Definition of hi-fi
1 : high fidelity
2 : equipment for reproduction of sound with high fidelity
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More Definitions for hi-fi
hi-fi
nounEnglish Language Learners Definition of hi-fi
somewhat old-fashioned : a piece of electronic equipment for reproducing sound in a clear and accurate way
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Time Traveler for hi-fi
The first known use of hi-fi was in 1948
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