a brass instrument of the tuba family, with a large, movable bell: it was developed from the helicon and is used esp. in military bands
Origin of sousaphoneafter Sousa, who suggested its form
A large brass instrument, similar in range to the tuba, having a flaring bell and a shape adapted to being carried in marching bands.
Origin of sousaphoneAfterJohn Philip Sousa
Named after John Philip Sousa, the famous march composer and conductor, with the suffix -phone.