DIATONIC

[dia.ton.ic] adj [LL diatonicus, fr. Gk diatonikos, fr. diatonos stretching, fr. diateinein to stretch out, fr. dia- + teinein to stretch--more at thin] (1694): of or relating to a major or minor musical scale comprising intervals of five whole steps and two half steps -- dia.ton.i.cal.ly adv