1. (a.) Next in order after the seventh.

2. (a.) Consisting of one of eight equal divisions of a thing.

3. (n.) The quotient of a unit divided by eight; one of eight equal parts; an eighth part.

4. (n.) The interval of an octave.

contraoctave double contraoctave eightfold four-foot octave four-line octave great octave octadic octagonal octahedral octal octan octaploid octastyle octave octofid octonary octosyllabic octuple one-line octave ottava ottava alta ottava bassa small octave subcontraoctave tone row two-foot octave two-line octave