noun
amplifier
AM-pluh-feye-uh
noun
1
A device that increases the strength of an electrical signal, especially to make sound louder.
"He cranked up the amplifier before the encore."
"The radio station upgraded its amplifier for a stronger broadcast signal."
How to Use Amplifier
Learner’s notesIn plain EnglishAny device that makes an electrical or sound signal stronger or louder.
Common pairings
guitar amplifier
power amplifier
turn up the amplifier
Word Forms
amplifiers plural
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He cranked up the _____ before the encore.
Etymology
From "amplify" plus the agent suffix "-er" — literally "the thing that amplifies".