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 lyre with seven chords.

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

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

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