Source : Webster's Revised Unabridged Dictionary (1913)

Converter \Con*vert"er\, n.
   1. One who converts; one who makes converts.

   2. (Steel Manuf.) A retort, used in the Bessemer process, in
      which molten cast iron is decarburized and converted into
      steel by a blast of air forced through the liquid metal.

Source : WordNet®

converter
     n : a device for changing one substance or form or state into
         another [syn: {convertor}]