The Collaborative International Dictionary of English v.0.48:

Foreshorten \Fore*short"en\, v. t.
   1. (Fine Art) To represent on a plane surface, as if extended
      in a direction toward the spectator or nearly so; to
      shorten by drawing in perspective.
      [1913 Webster]

   2. Fig.: To represent pictorially to the imagination.
      [1913 Webster]

            Songs, and deeds, and lives that lie
            Foreshortened in the tract of time.   --Tennyson.
      [1913 Webster]

WordNet (r) 3.0 (2006):

foreshorten
    v 1: reduce in scope while retaining essential elements; "The
         manuscript must be shortened" [syn: abridge,
         foreshorten, abbreviate, shorten, cut, contract,
         reduce] [ant: dilate, elaborate, enlarge, expand,
         expatiate, exposit, expound, flesh out,
         lucubrate]
    2: shorten lines in a drawing so as to create an illusion of
       depth

Moby Thesaurus II by Grady Ward, 1.0:

42 Moby Thesaurus words for "foreshorten":
   abbreviate, abridge, abstract, bob, boil down, capsulize, clip,
   compress, condense, contract, crop, curtail, cut, cut back,
   cut down, cut off short, cut short, dock, elide, epitomize, mow,
   nip, poll, pollard, prune, reap, recap, recapitulate, reduce,
   retrench, shave, shear, shorten, snub, stunt, sum up, summarize,
   synopsize, take in, telescope, trim, truncate