Definition of euphonium
: a brass instrument smaller than but resembling a tuba and having a range from B flat below the bass staff upward for three octaves
Keep scrolling for more
Test Your Vocabulary
Who Knew?
-
- What is a ruelle?

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
Anagram puzzles meet word search.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share euphonium
Time Traveler for euphonium
The first known use of euphonium was in 1865
See more words from the same year