<p><strong>Adjective:</strong></p><ul><li>Next after the sixth; being the ordinal number for seven.</li><li>Being one of seven equal parts.</li></ul><p><strong>Noun:</strong></p><ul><li>A seventh part, especially of one (1/7).</li><li>The seventh member of a series.</li><li>Music: a tone on the seventh degree from a given tone (counted as the first).</li><li>The interval between such tones.</li><li>The harmonic combination of such tones.</li></ul>