The Collaborative International Dictionary of English v.0.48:

Jesuitism \Jes"u*it*ism\, n. [Cf. F. j['e]suitisme.]
   [1913 Webster]
   1. The principles and practices of the Jesuits.
      [1913 Webster]

   2. Cunning; deceit; deceptive practices to effect a purpose;
      subtle argument; -- an opprobrious use of the word.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Jesuitism
    n 1: the theology or the practices of the Jesuits (often
         considered to be casuistic) [syn: Jesuitism, Jesuitry]