In
music theory, a
dominant seventh chord, or
major minor seventh chord, is a
chord composed of a
root,
major third,
perfect fifth, and
minor seventh. It can be also viewed as a
major triad with an additional
minor seventh. When using
popular-music symbols, it is denoted by adding a superscript "7" after the letter designating the chord root. The dominant seventh is found almost as often as the
dominant triad. In
Roman numerals it is represented as V
7. The chord can be represented by the integer notation {0, 4, 7, 10}.