sousaphone[so̵̅o̅′zə fōn′, so̵̅o̅′sə-]
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 John Philip 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 sousaphoneAfter John Philip Sousa.