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microphone

mi·cro·phone

microphone

 
pronunciation:
maI kr fon
features:
Word History, Word Explorer, Word Parts
part of speech: noun
definition: a device that changes sound waves into electronic signals. Microphones are used to make sounds louder or to broadcast or record them.
 
Word History
The word microphone was formed from two ancient Greek words: mikros , meaning "small" and phone, meaning "sound". A microphone makes little sounds bigger.
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See
  communication, film