A nonharmonic note.    From Wordnet, Princeton University. 

Thus the totality of intervals is thought of as a graduated structure leading from unitas via the perfect and imperfect assonances to the dissonances and nonharmonic rela - tionships.    From Wordnik.com.  [MUSIC AS A DIVINE ART] Reference

A nonharmonic gurgling escapes from his chest.    From Wordnik.com.  [Chicago Reader] Reference