amplifier
nounUK /ˈæmplɪfaɪə/
US /ˈæmpləfaɪər/
A machine that makes sounds louder.
He turned up the amplifier so the music filled the whole room.
RELATED WORDS
OTHER MEANINGS
2. An electronic device that increases the strength of a signal, such as a radio or electrical signal.
The radio amplifier boosted the weak signal from the distant station.
3. A person or thing that expands or adds detail to something, such as an idea or story.
Her enthusiasm was an amplifier for the team's creativity.
4. A lens or device that enlarges an image or view.
The telescope's amplifier made the tiny moon appear much larger.