The Collaborative International Dictionary of English v.0.48:

Symbolist \Sym"bol*ist\, n.
   One who employs symbols.
   [1913 Webster] Symbolistic

WordNet (r) 3.0 (2006):

symbolist
    n 1: a member of an artistic movement that expressed ideas
         indirectly via symbols
    2: someone skilled in the interpretation or representation of
       symbols [syn: symbolist, symbolizer, symboliser]