Seventh

Definition:

(a.) Next in order after the sixth;; coming after six others.
(a.) Constituting or being one of seven equal parts into which anything is divided; as, the seventh part.
(n.) One next in order after the sixth; one coming after six others.
(n.) The quotient of a unit divided by seven; one of seven equal parts into which anything is divided.
(n.) An interval embracing seven diatonic degrees of the scale.
(n.) A chord which includes the interval of a seventh whether major, minor, or diminished.

Compare seventh with other words:

seventh vs. seventy