Source : Webster's Revised Unabridged Dictionary (1913)

Jansenism \Jan"sen*ism\, n. [F. Jans['e]nisme.] (Eccl. Hist.)
   The doctrine of Jansen regarding free will and divine grace.

Source : WordNet®

Jansenism
     n : the Roman Catholic doctrine of Cornelis Jansen and his
         disciples; salvation is limited to those who are subject
         to supernatural determinism and the rest are assigned to
         perdition