monophonicPronunciation: /ˌmɒnə(ʊ)ˈfɒnɪk/Definition of monophonic adjective 1(of sound reproduction) using only one channel of transmission. Compare with stereophonic. 2 Music having a single melodic line without harmonies or melody in counterpoint. Compare with homophonic and polyphonic.Derivatives monophonically adverb monophony noun Origin: early 19th century: from mono- 'one' + Greek phonē 'sound' + -icmonophonic in other Oxford dictionaries Definition of monophonic in the US English dictionary