seventh

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The ordinal number matching the number seven in a series.
2. n. One of seven equal parts.
3. n. Music An interval encompassing seven diatonic degrees.

Century Dictionary and Cyclopedia

1. Last in order of a series of seven; preceded by six of the same kind; next in order after that which is sixth: an ordinal numeral.
2. Constituting or being one of seven equal parts into which a whole may be divided: as, the seventh part.
3. n. One next in order after the sixth.
4. n. The quotient of unity divided by seven; one of seven equal parts into which a whole is divided.
5. n. In music:
6. n. A tone on the seventh degree above or below a given tone; the next tone to the octave.
7. n. The interval between any tone, and a tone on the seventh degree above or below it.
8. n. The harmonic combination of two tones at the interval thus defined.
9. n. In a scale, the seventh tone from the bottom; the leading-tone: solmizated si, or, in the tonic sol-fa system, ti. The typical interval oí the seventh is that between the first and the seventh tones of a major scale, which is acoustically represented by the ratio 8:15. Such a seventh is called major. A seventh a half-step shorter is called minor; and one two half-steps shorter is called diminished. All kinds of sevenths are classed as dissonances, the minor seventh being the most beautiful and the most useful of dissonant intervals. The seventh produced by taking two octaves downward from the sixth harmonic of the given tone is sometimes called the natural seventh; it is sometimes used in vocal music, and on instruments, like the violin, whose intonation is not fixed.
10. n. In early English law, a seventh of the rents of the year, or of movables, or both, granted or levied by way of tax.

Wiktionary

1. adj. The ordinal form of number seven.
2. n. The person or thing in the seventh position.
3. n. One of seven equal parts of a whole.
4. n. music A tone of the seventh degree from a given tone, the interval between two such tones, or the two tones sounding in unison.

GNU Webster's 1913

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

WordNet 3.0

1. n. the musical interval between one note and another seven notes away from it
2. adj. coming next after the sixth and just before the eighth in position
3. n. one part in seven equal parts
4. n. position seven in a countable series of things