galvanizer

from WordNet (r) 3.0 (2006)

galvanizer
    n 1: a skilled worker who coats iron or steel with zinc [syn:
         {galvanizer}, {galvaniser}]
    2: a leader who stimulates and excites people to action [syn:
       {galvanizer}, {galvaniser}, {inspirer}]

from The Collaborative International Dictionary of English v.0.48

Galvanizer \Gal"va*ni`zer\, n.
   One who, or that which, galvanize.
   [1913 Webster]