euphonium
noun/juːˈfəʊniəm/
/juːˈfəʊniəm/
- a large brass musical instrument like a tubaTopics Musicc2Word Originmid 19th cent.: from Greek euphōnos ‘having a pleasing sound’ + -ium.
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euphonium
Definition of euphonium noun from the Oxford Advanced Learner's Dictionary