The Collaborative International Dictionary of English v.0.48:

Eclecticism \Ec*lec"ti*cism\, n. [Cf. F. ['e]clecticisme. Cf.
   Electicism.]
   Theory or practice of an eclectic.
   [1913 Webster]

WordNet (r) 3.0 (2006):

eclecticism
    n 1: making decisions on the basis of what seems best instead of
         following some single doctrine or style [syn:
         eclecticism, eclectic method]