The Collaborative International Dictionary of English v.0.48:

Anabaptistry \An`a*bap"tist*ry\, n.
   The doctrine, system, or practice, of Anabaptists. [R.]
   [1913 Webster]

         Thus died this imaginary king; and Anabaptistry was
         suppressed in Munster.                   --Pagitt.
   [1913 Webster]