Source : Webster's Revised Unabridged Dictionary (1913)

Determinism \De*ter"min*ism\, n. (Metaph.)
   The doctrine that the will is not free, but is inevitably and
   invincibly determined by motives.

         Its superior suitability to produce courage, as
         contrasted with scientific physical determinism, is
         obvious.                                 --F. P. Cobbe.

Source : WordNet®

determinism
     n : (philosophy) a philosophical theory holding that all events
         are inevitable consequences of antecedent sufficient
         causes; often understood as denying the possibility of
         free will