The Collaborative International Dictionary of English v.0.48:

antidisestablishmentarianism
\an`ti*dis`es*tab`lish*men*ta"ri*an*ism\

   ([a^]n*t[-e]*d[i^]s`[e^]s*t[a^]b`l[i^]sh*men*t[^a]r"[-e]*[a^]n*[i^]z'm),
   n.
   the doctrine or political position that opposes the
   withdrawal of state recognition of an established church; --
   used especially concerning the Anglican Church in England.
   Opposed to disestablishmentarianism.
   [PJC]