[dahy-uh-pey-zuh
n, -suhn] 
| 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. |
| di·a·pa·son (dī'ə-pā'zən, -sən) n.
[Middle English diapasoun, from Latin diapāsōn, the whole octave, from Greek dia pāsōn (khordōn), through all (the notes) : dia, through; see dia- + pāsōn, feminine genitive pl. of pās, every; see pant- in Indo-European roots.] |
diapason
(from Greek dia pason chordon: "through all the strings"), in medieval music, the interval, or distance between notes, encompassing all degrees of the scale-i.e., the octave. In French, diapason indicates the range of a voice and is also the word for a tuning fork and for pitch
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