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AMPLIFIER

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am⋅pli⋅fi⋅er

[am-pluh-fahy-er]
–noun
1. a person or thing that amplifies or enlarges.
2. an electronic component or circuit for amplifying power, current, or voltage.

Origin:
1540–50; amplify + -er 1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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am·pli·fi·er   (ām'plə-fī'ər)   
n.  
  1. One that amplifies, enlarges, or extends.

  2. Electronics A device, especially one using transistors or electron tubes, that produces amplification of an electrical signal.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

amplifier

In electronics, a device that takes a small electric signal and converts it into a large one. Amplifiers are used in stereo systems, electric guitars, and loudspeakers.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: am·pli·fi·er
Pronunciation: 'am-pl&-"fI(&)r
Function: noun
: one that amplifies; specifically : anelectronic device (as in a computer or sound-reproducing system) for amplifying voltage, current, or power
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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