Source : Webster's Revised Unabridged Dictionary (1913)

Totemism \To"tem*ism\, n.
   1. The system of distinguishing families, clans, etc., in a
      tribe by the totem.

   2. Superstitious regard for a totem; the worship of any real
      or imaginary object; nature worship. --Tylor.

Source : WordNet®

totemism
     n : belief in the kinship of a group of people with a common
         totem