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heptachord: Meaning and Definition of

hep•ta•chord

Pronunciation: (hep'tu-kôrd"), [key]
— n.
  1. a musical scale of seven notes.
  2. an interval of a seventh.
  3. an ancient Greek stringed instrument.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
heptachlor heptad
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