amplifier

noun

am·​pli·​fi·​er ˈam-plə-ˌfī(-ə)r 

: 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

The top half of the purifier features a glossy white, bladeless amplifier loop fan that distributes clean, hydrated air throughout the room. —John R. Delaney, PC Magazine, 28 Apr. 2026

Those options culminate with the Pendry suite, a 21st-floor, two-bedroom corner suite with a baby grand piano and state-of-the-art entertainment system from Bowers & Wilkins (complete with an in-room turntable, amplifier, curated record collection, and tower speakers). —Condé Nast, Condé Nast Traveler, 21 Apr. 2026

Bruce Brown was Denver’s amplifier, compiling five steals off the bench in his first playoff game as a Nugget since the 2023 championship clincher. —Bennett Durando, Denver Post, 19 Apr. 2026

That includes promoting undercover videos showing the perils of factory farming, sometimes with narrators or amplifiers like Joaquin Phoenix, Alicia Silverstone, Pamela Anderson and Woody Harrelson. —Erik Hayden, HollywoodReporter, 17 Apr. 2026

Word History

Etymology

amplify + -er entry 2

First Known Use

1551, in the meaning defined above

Phrases Containing amplifier

• amplifier host

Rhymes for amplifier

• acquire
• attire
• bonfire
• campfire
• ceasefire
• conspire
• desire
• enquire
• entire
• greenbrier
• gunfire
• homebuyer

Kids Definition

amplifier

noun

am·​pli·​fi·​er ˈam-plə-ˌfī(-ə)r 

: 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 

: one that amplifies

specifically : an electronic device (as in a computer or sound-reproducing system) for amplifying voltage, current, or power