Steampunk    This definition comes from a posting on LM-NET from Bob Hicks Akansas City High School Library Arkansas City, KS 67005 

It is a sub-genre of Science Fiction, alternate history and speculative fiction that came into prominence in the 1980s and early 1990s.  These are fictional works set in an era or world where steam power is still widely used, usually the 19th century or Victorian era Britain. It has prominent elements of Science Fiction or Fantasy and often features anachronistic technology or futuristic innovations as Victorians may have envisioned them.  This may include fictional machines found in the works of authors such as H. G. Wells or Jukes Verne, or real machines like computers.  Some Steampunk works contain alternate history presentations for technology like dirigibles, analog computers.  There are subgenres: “Gaslight Romances,”  “Historical Steampunk.” (Alternative history)  If, like me, this is a new genre to you, Mr. Hicks included a few titles that may help clarify this genre.  Steampunk, 2008,  short story anthology, editors Ann and Jeff Vandermeer;  The League of Extraordinary Gentlemen, graphic novel by Alan Moore;   The Difference Engine, 1992, by William Gibson and Bruce Sterling;  Airborn, 2004, by Kenneth Oppel;   Perdido Street, 2001by China Mieville.  This author is both popular and influential.