The Collaborative International Dictionary of English v.0.48:

Pantisocracy \Pan`ti*soc"ra*cy\, n. [Panto- + Gr. ? equal + ? to
   rule.]
   A Utopian community, in which all should rule equally, such
   as was devised by Coleridge, Lovell, and Southey, in their
   younger days.
   [1913 Webster]