Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Origin: high fidelity

hi-fi

 noun
     
Related topics: Recording
hi-fi plural hi-fis [countable] old-fashioned
APMTCR a piece of high quality electronic equipment for playing recorded music [= stereo]
—hi-fi adjective:
hi-fi speakers
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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