amplifier

noun

am·​pli·​fi·​er ˈam-plə-ˌfī(-ə)r How to pronounce amplifier (audio)
: one that amplifies
specifically : an electronic device (as in a stereo system) for amplifying voltage, current, or power

Examples of amplifier in a Sentence

He plugged his electric guitar into an amplifier.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
While the amplifier can handle just about any speaker with the right connections, it's best suited to Sonos' architectural speakers that can be tucked away in walls and ceilings. Abhimanyu Ghoshal, New Atlas, 30 Jan. 2026 Jackson was the pioneer, but Ross was the amplifier. Steven Louis Goldstein, New York Times, 30 Jan. 2026 Dressed all in black with his then-signature (pre-pandemic) mask, Bad Bunny stood atop the amplifier and brandished a Puerto Rican flag that included a light blue triangle, a version widely acknowledged as a pro-independence flag. Julyssa Lopez, Rolling Stone, 26 Jan. 2026 With the telecoil system, an amplifier and copper wire (installed under the carpet or within the floor) transmit audio from the sound system via a magnetic field. Lisa Schencker, Chicago Tribune, 24 Jan. 2026 See All Example Sentences for amplifier

Word History

Etymology

amplify + -er entry 2

First Known Use

1551, in the meaning defined above

Time Traveler
The first known use of amplifier was in 1551

Browse Nearby Words

Cite this Entry

“Amplifier.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amplifier. Accessed 14 Feb. 2026.

Kids Definition

amplifier

noun
am·​pli·​fi·​er ˈam-plə-ˌfī(-ə)r How to pronounce amplifier (audio)
: one that amplifies
especially : a device usually using electron tubes or transistors to obtain an increase of voltage, current, or power

Medical Definition

amplifier

noun
am·​pli·​fi·​er ˈam-plə-ˌfī(ə)r How to pronounce amplifier (audio)
: one that amplifies
specifically : an electronic device (as in a computer or sound-reproducing system) for amplifying voltage, current, or power

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