Definition

1. Noun:
   • Either of the two main stops on a pipe organ: A "diapason stop" is a fundamental stop on a pipe organ that produces the organ's characteristic foundational tone. It typically refers to the principal chorus stops, which are the primary, unmuted flue pipes.

Examples of Usage

• Noun:
  • The organist pulled out the diapason stop to begin the prelude.
  • The full, rich sound of the pipe organ comes primarily from its diapason stops.

Advanced Usage

• "To draw the diapason stop": To engage or activate this specific stop on the organ console.
  • For the hymn's final verse, she decided to draw the diapason stop for added power.

Variants and Related Words

• Diapason (noun): In music, this can refer to the entire compass of a voice or instrument, or to a standard of musical pitch. In organ context, it is the root term for the foundational tone.
• Stop (noun): A control on an organ that selects a particular set of pipes to sound.

Synonyms

• Principal stop: A common synonym, as diapason stops are often labeled as "Principal" on organ consoles.
• Foundation stop: Describes its role in providing the basic tonal foundation.

Related Phrases

• "Full diapason": Refers to using the complete foundational chorus of the organ, often involving multiple diapason stops.
  • The piece concluded with a majestic chord played on full diapason.

Noun

1. either of the two main stops on a pipe organ