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Meaning of all' ottava

all' ot•ta•va

Pronunciation: (äl" u-tä'vuIt.äl"lôt-tä'vä), [key]
— Music. Music.
  1. a direction (8va), placed above or below the staff to indicate that the passage covered is to be played one octave higher or lower respectively.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.