diapason

diapason

[dahy-uh-pey-zuhn, -suhn]
noun 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.

Origin:
1350–1400; Middle English diapasoun < Latin diapāsōn the whole octave < Greek dià pāsôn (chordôn) through all (the notes), short for hē dià pāsôn chordôn symphōnía the concord through all the notes of the scale

diapasonal, adjective
subdiapason, noun
subdiapasonal, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
diapason (ˌdaɪəˈpeɪzən, -ˈpeɪsən)
 
n
1.  either of two stops (open and stopped diapason) usually found throughout the compass of a pipe organ that give it its characteristic tone colour
2.  the compass of an instrument or voice
3.  chiefly in French usage
 a.  a standard pitch used for tuning, esp the now largely obsolete one of A above middle C = 435 hertz, known as diapason normal (French()
 b.  a tuning fork or pitch pipe
4.  (in classical Greece) an octave
 
[C14: from Latin: the whole octave, from Greek: () dia pasōn (khordōn sumphōnia) (concord) through all (the notes), from dia through + pas all]
 
dia'pasonal
 
adj
 
diapasonic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
Encyclopedia

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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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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