† ˈsesquitonen.MusicObsolete an interval consisting of a tone and a semitone, a minor third.
ΘΚΠ
society > leisure > the arts > music > musical sound > pitch > interval > [noun] > third > minor
sesquitone1694
trihemitone1694
1694 W. HolderTreat. Harmony iv. 80 The Third Minor, Trihemitone, or Sesquitone, as consisting of three half Tones, (or rather of a Tone and half a Tone).