1. octavate - Noun
2. octavate - Verb
(music) To sound one octave higher or lower.
(intransitive, of an instrument) To resonate or sound one octave higher or lower.
(intransitive, of a person) To span (at least) one octave in playing a musical instrument.
(transitive, rare, of an instrument, construed with up) To double the pitch of (a part of itself).
(mathematics, rare) To convert (the expression of a number) from denary to octal notation.
octavate (plural octavates)
(rare) octave (transfiguratively)