octave: Meaning and Definition of

oc•tave

1. a tone on the eighth degree from a given tone.
2. the interval encompassed by such tones.
3. the harmonic combination of such tones.
4. a series of tones, or of keys of an instrument, extending through this interval.
2. a pipe-organ stop whose pipes give tones an octave above the normal pitch of the keys used.
3. a series or group of eight.
4. Also called
1. a group of eight lines of verse, esp. the first eight lines of a sonnet in the Italian form. Cf.sestet(def. 1).
2. a stanza of eight lines.
5. the eighth of a series.
1. the eighth day from a feast day, counting the feast day as the first.
2. the period of eight days beginning with a feast day.
7. one eighth of a pipe of wine.
8. the eighth of eight defensive positions.

1. pitched an octave higher.