osmogene

from The Collaborative International Dictionary of English v.0.48

osmogene \os"mo*gene\ ([o^]s"m[-o]*j[=e]n or
   [o^]z"m[-o]*j[=e]n), n. [Osmose + root of Gr. ge`nos race.]
   An apparatus, consisting of a number of cells whose sides are
   of parchment paper, for conducting the process of osmosis. It
   is used especially in sugar refining to remove potassium
   salts from the molasses.
   [Webster 1913 Suppl.]