The Collaborative International Dictionary of English v.0.48:

graphoanalysis \graph`o*an*al"y*sis\
   (gr[a^]f`[-o]*an*[a^]l"[i^]*s[i^]s), n.
   The art of judging of a person's character, disposition, and
   aptitude from his handwriting; also called graphology. As a
   discipline, the modern form was developed by Milton Newman
   Bunker in the period after 1915.

   Note: Though its practitioners consider it a science, many
         commentators believe that its methodology is not
         scientific, and some consider it a pseudoscience, as is
         astrology. Some information about graphoanalysis and
         its methods can be found at the web site maintained by
         the [a href="http:]/www.igas.com">International
         Graphoanalysis Society.
         [PJC]

The Collaborative International Dictionary of English v.0.48:

graphology \gra*phol"o*gy\ (gr[.a]*f[o^]l"[-o]*j[y^]), n. [Gr.
   gra`fein to write + -logy: cf. F. graphologie.]
   1. The art of judging of a person's character, disposition,
      and aptitude from his handwriting; called graphoanalysis
      by its practitioners. Though its practitioners consider it
      a science, it is widely considered a pseudoscience, as is
      astrology.
      [1913 Webster +PJC]

   2. (Math.) The system or notation used in dealing with
      graphs.
      [Webster 1913 Suppl.]

   3. (Linguistics) The study of systems of writing of
      languages; also called grammatology.
      [PJC]

WordNet (r) 3.0 (2006):

graphology
    n 1: the study of handwriting (especially as an indicator of the
         writer's character or disposition)