Definition of pentachord in English:

pentachord

noun

  • 1A musical instrument with five strings.

    • ‘Wasn't the pentachord also a classical era instrument?’
  • 2A series of five musical notes.

    • ‘You can expand the pentachord by a note or two.’
    • ‘Demonstrate and use basic technical skills including the ability to play pentachord, tetrachord and scale patterns with proper fingering in major and minor keys, and to play tonic, subdominant, dominant, and dominant-seventh chord progressions in major and minor keys.’

Pronunciation:

pentachord

/ˈpɛntəkɔːd/