Definition of sinfonietta in US English:

sinfonietta

noun

Music
  • 1A short or simple symphony.

    • ‘Still, in loveliness, this utility sinfonietta is not surpassed by many.’
    • ‘In the liner notes to the recording, Jacob likens his work to ‘a miniature symphony or sinfonietta,’ mainly because the movements show the bare bones of symphonic classical forms.’
    1. 1.1 A small symphony orchestra.
      • ‘The National Youth Orchestra has chosen the prestigious festival as one of the events to unveil its newly-established sinfonietta.’
      • ‘The sinfonietta is currently on a European tour which will also take it to Slovakia this month.’

Origin

Italian, diminutive of sinfonia (see sinfonia).

Pronunciation

sinfonietta

/ˌsɪnfənˈjɛdə//ˌsinfənˈyedə/