The Collaborative International Dictionary of English v.0.48:

Divarication \Di*var`i*ca"tion\, n. [Cf. F. divarication.]
   1. A separation into two parts or branches; a forking; a
      divergence.
      [1913 Webster]

   2. An ambiguity of meaning; a disagreement of difference in
      opinion. --Sir T. Browne.
      [1913 Webster]

   3. (Biol.) A divergence of lines of color sculpture, or of
      fibers at different angles.
      [1913 Webster]

WordNet (r) 3.0 (2006):

divarication
    n 1: branching at a wide angle