fauxbourdon
[ foh-ber-don; French foh-boor-dawn ]
/ ˈfoʊ bərˌdɒn; French foʊ burˈdɔ̃ /
noun
Music.
a 15th-century compositional technique employing three voices, the upper and lower voices progressing an octave or a sixth apart while the middle voice extemporaneously doubles the upper part at a fourth below.
the use of progressions of parallel sixth chords.
Origin of fauxbourdon
1875–80; < French: literally, false bourdon