Definition of pantonality in US English:

pantonality

noun

Music
  • Musical composition which is not in any one key but moves between numerous discernible keys without becoming atonal; the use of many keys or tonalities. Also (occasionally): = "atonality".

Origin

1940s. From pan- + tonality, after German pantonal, adjective. Compare later pantonal.

Pronunciation

pantonality

/ˌpantə(ʊ)ˈnalɪti/