[ yoo-foh-nee-uh m ]
/ yuˈfoʊ ni əm /


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.

Origin of euphonium

First recorded in 1860–65; euph(ony) + (harm)onium Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for euphonium

British Dictionary definitions for euphonium


/ (juːˈfəʊnɪəm) /


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

Word Origin for euphonium

C19: New Latin, from euph (ony + harm) onium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012