Pronunciation: (sev'unth),[key] —adj. 1. next after the sixth; being the ordinal number for seven.
2. being one of seven equal parts.
—n. 1. a seventh part, esp. of one (1/7).
2. the seventh member of a series.
3. Music. a. a tone on the seventh degree from a given tone (counted as the first).
b. the interval between such tones.
c. the harmonic combination of such tones.