heptachord Meaning, Definition & Usage

Hep"ta*chord noun
Etymology
Gr. "epta`xordos seven-stringed; "epta` seven + xordh` chord: cf. F. heptacorde. See Seven, and Chord.
Definitions
  1. (Anc. Mus.) (a) A system of seven sounds. (b) A lyre with seven chords.
  2. (Anc. Poet.) A composition sung to the sound of seven chords or tones. Moore (Encyc. of Music).

Webster 1913