diapason
/ˌdaɪəˈpeɪsən/noun
(亦作open diapason 或stopped diapason)
1- an organ stop sounding a main register of flue pipes, typically of eight-foot pitch八度音程; 主音栓。
1.1
- poetic/literary the entire compass, range, or scope of something〈诗/文〉全范围, 全域。
1.2
- figurative a grand swelling burst of harmony〈喻〉（和声由弱而强时）气势宏伟的突然迸发。
词源
late Middle English (denoting the interval of an octave)： via Latin from Greek dia pasōn （khordōn） 'through all (notes)'.