ditone
noun
di·tone
ˈdīˌtōn
: the Greek musical interval of a major third comprehending two major steps, corresponding to the ratio 81:64, and being slightly larger than the modern major third
ditonic adjective
(ˈ)dī¦tänik
Word History
Etymology
Greek ditonon, from neuter of ditonos having two tones, from di- + tonos tone