from The American Heritage® Dictionary of the English Language, 4th Edition

  • adv. In a manner that is sustained as long as or beyond a note's full value. Used chiefly as a direction.
  • n. A sostenuto passage or movement.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adv. played in a sustained manner beyond the notes normal value
  • n. A note or passage marked to be sustained

from the GNU version of the Collaborative International Dictionary of English

  • adj. Sustained; -- applied to a movement or passage the sounds of which are to sustained to the utmost of the nominal value of the time; also, to a passage the tones of which are to be somewhat prolonged or protacted.

from The Century Dictionary and Cyclopedia

  • In music, sustained; prolonged: sometimes merely the same as tenuto, and sometimes implying in addition a slight reduction of speed. Abbreviated sost.


Italian, past participle of sostenere, to sustain, from Latin sustinēre; see sustain.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Italian (Wiktionary)



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