Bible Dictionaries
Heptachord

Webster's Dictionary

(1):

(n.) A composition sung to the sound of seven chords or tones.

(2):

(n.) A system of seven sounds.

(3):

(n.) A lyre with seven chords.

Bibliography Information
Webster, Noah. Entry for 'Heptachord'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​h/heptachord.html. 1828.