euphonium

American  

[yoo-foh-nee-uhm] / juˈfoʊ ni əm /

noun

1. a brass musical instrument similar to the baritone tuba but somewhat smaller, with a wider bore and mellower tone, and often having a second bell.

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euphonium British  

/ juːˈfəʊnɪəm /

noun

1. a brass musical instrument with four valves; the tenor of the tuba family. It is used mainly in brass bands

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Etymology

Origin of euphonium

First recorded in 1860–65; euph(ony) + (harm)onium

Example Sentences

See Examples For:

euphonium

Carys's 11-year-old sister, Eliza, who plays the euphonium, will also perform at the Abbey.

From BBC ● Dec. 5, 2025

Ada Brooks, her mouth dry from nerves, lifted the bell of her euphonium, a smaller relative of the tuba, and prepared to play the notes that could determine her future.

From New York Times ● May 27, 2024

Sometimes she performs duets with her husband, who plays the euphonium, or for the uninitiated, “a brass instrument that looks a lot like a small tuba,” Ray said.

From Washington Post ● Jan. 9, 2022

The last pieces to go were a piano keyboard and euphonium our sons no longer needed.

From Seattle Times ● Jun. 7, 2021

The Ring also called for the invention of subsequently dubbed 'Wagner tubas, a hybrid that combined elements of the French horn, trombone and euphonium.

From "The Story of Music" by Howard Goodall