Noun
(music) the seventh note of the diatonic scale
Source: WordNetAs soon as you find out what a leading tone is, you think, Oh my God. Source: Internet
If the final is approached from below, then the leading tone must be raised in a minor key (Dorian, Hypodorian, Aeolian, Hypoaeolian), but not in Phrygian or Hypophrygian mode. Source: Internet
Jacobs, quoted in Holden, p. 1060 Jacobs also opined that the leading tone that begins "Never mind the why and wherefore" "serves to emphasize the phrase like a Johann Strauss-ian grace-note". Source: Internet
The term leading tone is generally reserved for seventh degrees that are a half step (semitone) away from the tonic, as is the case in the major scale or the harmonic minor scale (and the melodic minor, ascending). Source: Internet