(music) Transposition by an octave. / (rare) Normalization of a numerical ratio by repeated multiplication or division by 2.

(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.

(rare) octave (transfiguratively)

plural of octavation

An audio effect in which a signal is combined with another version of itself that is an octave higher or lower.

(mathematics) Synonym of octic

(music) The octave that begins on the C that is two ledger lines below the staff of the bass clef

(music) The octave directly below the great octave.

plural of great octave

plural of contra-octave