octavate /ˈɒktəveɪt/verb 5noun 1forms 3 verb5 •To sound one octave higher or lower. •To resonate or sound one octave higher or lower.The string, originally divided, will continue for some time to “octavate”. — 1922 •(rare) To double the pitch of (a part of itself).A 12-string doubles the octaves of only the lower four strings…. A doubled, capoed guitar “octavates up” the top two strings. — 1999 •To span (at least) one octave in playing a musical instrument.Ability to ornament, octavate, play chords and do some improvising. — 1984 •(rare) To convert (the expression of a number) from denary to octal notation. noun1 •(rare) octave (transfiguratively)There is an octavate of odours as well as octavates of notes in music. Like the keys of instruments, certain odours coincide or blend. — 2000 formsoctavated · octavating · octavates