Chapter+21

Applied Chord: A dominant-function harmony (V or vii, with or without the chordal seventh) applied to a chord other than tonic. An applied chord typically includes chromatic alterations (relative to the tonic key). Also called a secondary dominant.

Secondary Dominant: A dominant-function harmony (V or vii, with or without the chordal seventh) applied to a chord other than tonic (may also refer only to a secondary V chord). A secondary dominant typically includes chromatic alterations (relative to the tonic key). Also called an applied dominant, or applied chord.

Secondary Leading Tone Chord: A leading tone chord that functions as an applied, or secondary, dominant; usually a fully diminished seventh chord.

Temporary Tonic: The chord to which a secondary dominant or secondary leading tone harmony is applied; also known as a tonicized harmony.

Tonicization: The result when a chord becomes a temporary tonic by means of a secondary, or applied, dominant. The key of the passage does not really change, and the temporary tonic soon returns to its normal functional role in the primary key.