1. The quotient of a unit divided by sixteen; one of sixteen equal parts of one whole.

2. The next in order after the fifteenth; the sixth after the tenth.

3. (Mus.)

Defn: An interval comprising two octaves and a second. Moore (Encyc. of Music.)

SIXTH
Sixth, a. Etym: [From Six: cf. AS. sixta, siexta.]

1. First after the fifth; next in order after the fifth.

2. Constituting or being one of six equal parts into which anything is divided.

SIXTH
Sixth, n.

1. The quotient of a unit divided by six; one of six equal parts which form a whole.

2. The next in order after the fifth.