Definitions

1. adjective

relating to or resembling a diapason, especially in having a full, rich, and harmonious quality

“The diapasonal sound of the choir filled the entire cathedral.”

2. noun

a musical interval consisting of eight notes, especially the perfect octave, or a series of such intervals

“The diapasonal structure of the melody added depth to the song.”

3. adjective

having a wide range or scope, especially in relation to time or space

“The diapasonal view from the mountaintop was breathtaking.”