sostenuto

 
Pronunciation: /ˌsɒstəˈnuːtəʊ/
Music

adjective

  • (of a passage of music) to be played in a sustained or prolonged manner.

noun (plural sostenutos)

  • a passage to be played in a sustained or prolonged manner.
  • [mass noun] the performance of a passage in a sustained or prolonged manner.

Origin:

Italian, 'sustained'