Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of heptachord is as below...

Heptachord :: Heptachord (n.) A system of seven sounds.

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

Heptachord :: Heptachord (n.) A lyre with seven chords.

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