A sequence of six tones with a semitone in the middle, the others being whole tones, that was used in medieval music.
In medieval music, a diatonic scale of six tones, with a semitone between the third and the fourth.
(music) A series of six tones denoted with the syllables ut-re-mi-fa-sol-la separated by seconds, the only of which that is a minor second being mi-fa.
Origin of hexachord
- Medieval Latin hexachordum from Latin hexachordos having six strings or stops Greek hexa- hexa- Greek -khordos string, note (from khordē cord)
From American Heritage Dictionary of the English Language, 5th Edition