trialism

From trial +‎ -ism.

• (UK) IPA^(key): /ˈtɹʌɪəlɪzm̩/

trialism (uncountable)

1. A union of three states or political entities.
   • 1998, John Keegan, The First World War, Vintage 2000, p. 53:

     The consequence of an unsuccessful war might be concession to the Slavs, perhaps the ‘trialism’ which would undo Austro-Hungarian ‘dualism’.

2. The doctrine of the existence of body, soul, and spirit in human beings.

• trialist

• mistrial