n. | 1. | (Gr. Mus.) The octave, or interval which includes all the tones of the diatonic scale. Compare disdiapason. |
2. | Concord, as of notes an octave apart; harmony. | |
3. | The entire compass of tones; the entire compass of tones of a voice or an instrument. | |
4. | A standard of pitch; a tuning fork; | |
5. | One of certain stops in the organ, so called because they extend through the scale of the instrument. They are of several kinds, as |
Noun | 1. | diapason - either of the two main stops on a pipe organ Synonyms: diapason stop |