(noun, adjective)


1. (obsolete) Consisting of eight; eight in number.


1. a feast day and the seven days following it

Definition categories: time

2. a musical interval of eight tones

Definition categories: communication, interval

3. a rhythmic group of eight lines of verse

Definition categories: communication, stanza

Sentences with octave as a noun:

- The melody jumps up an octave at the beginning, then later drops back down an octave.

- The singer was known for astounding clarity over her entire five-octave range.

- The octave has a pitch ratio of 2:1.

- The bass starts on a low E, and the tenor comes in on the octave.