[al-tis-uh-moh; Italian ahl-tees-see-maw]Music.
  1. in altissimo, in the second octave above the treble staff.

Origin of altissimo

1810–20; < Italian: literally, highest, equivalent to alt(o) high + -issimo superlative suffix Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for altissimo

Historical Examples of altissimo

British Dictionary definitions for altissimo


  1. (of music) very high in pitch
  2. of or relating to the octave commencing on the G lying an octave above the treble clef
  1. in altissimo in the octave commencing an octave above the treble clef

Word Origin for altissimo

Italian, literally: highest
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012