| Hexachord (n.) A series of six notes, with a semitone between the third and fourth, the other intervals being whole tones. Thesaurus Entries French harp, Irish harp, aeolian harp, cithara, clarsach, dulcimer, harmonica, harmonicon, heptachord, hexachord, kazoo, langspiel, lyre, mouth bow, mouth harp, mouth organ, polychord, symphonia, zither |