English edit

Etymology edit

tri- +‎ diapason

Noun edit

tridiapason (plural not attested)

  1. (music, historical) A triple octave, or twenty-second.[1]

References edit

  1. ^ 1817, Thomas Busby, A Dictionary of Music, Theoretical and Practical

tridiapason”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.