Source : Webster's Revised Unabridged Dictionary (1913)

Phalanstery \Phal"an*ster*y\, n.; pl. {-ies}. [F.
   phalanst[`e]re, fr. Gr. ? a phalanx + ? firm, solid.]
   1. An association or community organized on the plan of
      Fourier. See {Fourierism}.

   2. The dwelling house of a Fourierite community.