diaphony

/daɪˈæfənɪ/
noun (music)
1.
a style of two-part polyphonic singing; organum or a freer form resembling it
2.
(in classical Greece) another word for dissonance (sense 3) Compare symphony (sense 5a)
Derived Forms
diaphonic (ˌdaɪəˈfɒnɪk) adjective
Word Origin
C17: from Late Latin diaphōnia, from Greek, from diaphōnos discordant, from dia- + phōnē sound