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heptachord

American  
[hep-tuh-kawrd] / ˈhɛp təˌkɔrd /

noun

  1. a musical scale of seven notes.

  2. an interval of a seventh.

  3. an ancient Greek stringed instrument.

Etymology

Origin of heptachord

From the Greek word heptáchordos, dating back to 1720–30. See hepta-, chord 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.