[ am-pluh-fahy-er ]
See synonyms for amplifier on
  1. a person or thing that amplifies or enlarges.

  2. an electronic component or circuit for amplifying power, current, or voltage.

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Origin of amplifier

First recorded in 1540–50; amplify + -er1

Words Nearby amplifier Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use amplifier in a sentence

British Dictionary definitions for amplifier


/ (ˈæmplɪˌfaɪə) /

  1. an electronic device used to increase the strength of the signal fed into it

  2. such a device used for the amplification of audio frequency signals in a radio, etc

  1. photog an additional lens for altering the focal length of a camera lens

  2. a person or thing that amplifies

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for 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 New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.