Seventh \Sev"enth\, n.

1. One next in order after the sixth; one coming after six others.

2. The quotient of a unit divided by seven; one of seven equal parts into which anything is divided.

3. (Mus.)
   (a) An interval embracing seven diatonic degrees of the scale.
   (b) A chord which includes the interval of a seventh whether major, minor, or diminished.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Seventh \Sev"enth\, a. [From Seven: cf. AS. seofo[eth]a.]

1. Next in order after the sixth;; coming after six others.

On the seventh day, God ended his work which he had made; and he rested on the seventh day from all his work which he had made. --Gen. ii. 2.

2. Constituting or being one of seven equal parts into which anything is divided; as, the seventh part.

Seventh day, the seventh day of the week; Saturday.

Seventh-day Baptists. See under Baptist.

Source: Webster's Revised Unabridged Dictionary (1913)