n.
Pronunciation: ˌ d ī - ə - ' p ā -z ə n, -s ə n
Function: noun
Etymology: Middle English, from Latin, from Greek (h ē ) dia pas ō n (chord ō n symph ō nia), literally, the concord through all the notes, from dia through + pas ō n, genitive feminine plural of pas all ― more at DIA- , PAN-
Date: circa 1501
1 a : a burst of sound < diapason s of laughter> b : the principal foundation stop in the organ extending through the complete range of the instrument c (1) : the entire compass of musical tones (2) : RANGE , SCOPE <registers the full diapason of her responses ― Mindy Aloff>
2 a : TUNING FORK b : a standard of pitch