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mi·cro·phone

microphone

 
 
pronunciation:
maI kr fon
features:
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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.
The students couldn't hear the principal talking because the microphone was off.
 
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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  communication, film
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