Source : Webster's Revised Unabridged Dictionary (1913)

Raiffeisen \Raif"fei`sen\, a. (Economics)
   Designating, or pertaining to, a form of co["o]perative bank
   founded among the German agrarian population by Friedrich
   Wilhelm Raiffeisen (1818-88); as, Raiffeisen banks, the
   Raiffeisen system, etc. The banks are unlimited-liability
   institutions making small loans at a low rate of interest,
   for a designated purpose, to worthy members only.