didacticism

from WordNet (r) 3.0 (2006)

didacticism
    n 1: communication that is suitable for or intended to be
         instructive; "the didacticism expected in books for the
         young"; "the didacticism of the 19th century gave birth to
         many great museums"

from The Collaborative International Dictionary of English v.0.48

Didacticism \Di*dac"ti*cism\, n.
   The didactic method or system.
   [1913 Webster]