(of notes in a score) at an octave higher than written (when placed above the staff) or lower than written (when placed below the staff). Abbreviation:8va
ot·ta·va (ō-tä'və) adv.
& adj.Music At an octave higher or lower than the notes written. Used chiefly as a direction, positioned above or below a staff.
[Italian (all')ottava, (at the) octave, from Medieval Latin octāva, from Latin, feminine of octāvus, eighth; see octave.]