Lewis & Short

† dĭătŏnus, a, um, adj., = διάτονος (extended).

  1. I. In architecture: lateres, band-stones, which run through the thickness of a wall and bind it together, Vitr. 2, 8, 7.
  2. II. In music: diatonum, i, the natural or diatonic series of notes without breaks or intervals, the diatonic scale, Vitr. 5, 4, 3 sq.; Macr. Somn. Scip. 2, 4.