The Collaborative International Dictionary of English v.0.48:

Causality \Cau*sal"i*ty\, n.; pl. Causalities.
   1. The agency of a cause; the action or power of a cause, in
      producing its effect.
      [1913 Webster]

            The causality of the divine mind.     --Whewell.
      [1913 Webster]

   2. (Phren.) The faculty of tracing effects to their causes.
      --G. Combe.
      [1913 Webster]

WordNet (r) 3.0 (2006):

causality
    n 1: the relation between causes and effects