fan

   Without qualification, indicates a fan of science fiction, especially
   one  who  goes  to {con}s and tends to hang out with other fans. Many
   hackers  are fans, so this term has been imported from fannish slang;
   however,   unlike  much  fannish  slang  it  is  recognized  by  most
   non-fannish  hackers.  Among SF fans the plural is correctly fen, but
   this  usage  is  not  automatic  to  hackers.  "Laura reads the stuff
   occasionally but isn't really a fan."

[glossary]
[Reference(s) to this entry by made by: {con}]