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

So far, the experience of organizations both public and private suggests that AI is an amplifier. — Jennifer Pahlka, Foreign Affairs, 18 Aug. 2026

Professionals who know how to architect inputs and optimize agentic workflows use AI as an amplifier to reach outcomes faster, whereas those without that skill risk letting the technology shape their thinking. — Khadim Batti, Forbes.com, 17 Aug. 2026

The team also showed that the spontaneous mode could act as a magnonic parametric amplifier, producing gains of up to 40 decibels. — Rupendra Brahambhatt, Interesting Engineering, 15 Aug. 2026

There are fog machines, rainstorm fans, seat shaker amplifiers, flashing strobe lights and strong scents, according to Regal’s website. — Rod Stafford Hagwood, Sun Sentinel, 13 Aug. 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