heptachord

noun hep·ta·chord \-ˌkȯrd\

Definition of heptachord

  1. 1 :  a 7-stringed lyre of ancient Greece

  2. 2 :  a diatonic scale of seven notes or tones

  3. 3 :  the interval of a seventh

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Origin and Etymology of heptachord

Late Latin heptachordus with seven strings, from Greek heptachordos, from hepta- + -chordos stringed — more at -chord


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