Meaning of euphonium

eu•pho•ni•um

Pronunciation: (y-fō'nē-um), [key]
— n.
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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