Definition

1. Noun:
   • Musical instrument: A "monochord" is a musical instrument consisting of a single string stretched over a soundbox, used primarily in ancient and medieval music for acoustic experiments and tuning. It is the simplest form of stringed instrument.
   • Scientific device: Historically, it served as a tool to demonstrate the mathematical principles of pitch and harmony, such as the relationship between string length and sound frequency.

Usage Examples

• Musical instrument:
  • The musicologist demonstrated the monochord to explain the Pythagorean scale. (A single-string instrument used for teaching musical intervals.)
• Scientific device:
  • In the physics lab, the monochord was used to measure sound waves. (A tool for acoustic experiments.)

Advanced Usage

• "to play the monochord": to perform on this instrument, often in a historical or educational context.

  • She learned to play the monochord to understand ancient tuning systems. (To perform on the single-string instrument for study purposes.)

• "monochord theory": the body of knowledge related to the instrument's use in music theory and acoustics.

  • The lecture covered monochord theory and its impact on medieval harmony. (The theoretical principles derived from the instrument.)

Variants and Related Words

• Monochordic (adj): relating to or resembling a monochord.

  • The monochordic design of the instrument made it simple yet effective. (Having a single-string structure.)

• Monochordist (n): a person who plays or studies the monochord.

  • The monochordist gave a demonstration of ancient music. (A specialist in this instrument.)

Synonyms

• Single-string instrument: a musical device with only one string.
• Soundbox: the resonating chamber of the monochord.

Related Idioms

• "a monochord of thought": a poetic or metaphorical expression meaning a single, focused line of reasoning.
  • His argument was a monochord of thought, never deviating from the main point. (A simple, unvarying idea.)

Notes

• The monochord is historically significant in both music and physics, linking artistic practice to scientific inquiry. It is often compared to the modern "monochord" used in some experimental music genres.