See Also: heptachord(dictionary)

heptachord (iou)



heptachord adjective & noun. E18.
[In senses A., B.1 from Greek heptakhordos seven-stringed from HEPTA- + khorde string (see CORD noun1). In sense B.2, 3 from HEPTA- + CHORD noun1.]
Music.
A. adjective. Seven-stringed. E-M18.
b. noun.
Any musical instrument of seven strings. M18.
The interval of a seventh. M18.
A scale of seven notes; the modern major or minor scale. L18.