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Webster 1913 Edition

Tridiapason

Tri-diˊa-pa′son

,

Noun.

[Pref.

tri-

+

diaposon

.]

(Anc. Mus.)

A triple octave, or twenty-second.

Busby.

Webster 1828 Edition

Tridiapason

TRIDIAPA'SON

,

Noun.

[tri and diapason.] In music, a triple octave or twenty second.