Search Result for "polytonalism": 
Wordnet 3.0

NOUN (1)

1. music that uses two or more different keys at the same time;
[syn: polytonality, polytonalism]



WordNet (r) 3.0 (2006):

polytonalism
    n 1: music that uses two or more different keys at the same time
         [syn: polytonality, polytonalism]