Dictionary
di•a•pa•son
Pronunciation: (dī"u-pā'zun, -sun), [key]—
n. Music.
1. a full, rich outpouring of melodious sound.
2. the compass of a voice or instrument.
3. a fixed standard of pitch.
4. either of two principal timbres or stops of a pipe organ, one of full, majestic tone
(open diapason) and the other of strong, flutelike tone
(stopped diapason).
5. any of several other organ stops.
6. a tuning fork.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.