English

Adjective

bitonal ‎(not comparable)

1. (music, of a musical instrument) That has two tonic centres simultaneously
2. (music) Of or pertaining to bitonality
3. Of two tones, or shades of colour.
   • 2004, David Mitchell, Cloud Atlas

     So there we were, this black bro' frisks me down with his bitonal paw and relieves me of my wallet.

French

Etymology

bi- +‎ tonal

Adjective

bitonal m ‎(feminine singular bitonale, masculine plural bitonaux, feminine plural bitonales)

1. (music) bitonal