'Probabilism' definitions:

Definition of 'probabilism'

(from WordNet)
noun
A Roman Catholic system of casuistry that when expert opinions differ an actor can follow any solidly probable opinion that he wishes even though some different opinion might be more probable
noun
(philosophy) the doctrine that (since certainty is unattainable) probability is a sufficient basis for belief and action

Definition of 'Probabilism'

From: GCIDE
  • Probabilism \Prob"a*bil*ism\, n. [Cf. F. probabilisme.] The doctrine of the probabilists. [1913 Webster]