The Collaborative International Dictionary of English v.0.48:

Extrication \Ex`tri*ca"tion\, n.
   1. The act or process of extricating or disentangling; a
      freeing from perplexities; disentanglement.
      [1913 Webster]

   2. The act of sending out or evolving.
      [1913 Webster]

WordNet (r) 3.0 (2006):

extrication
    n 1: the act of releasing from a snarled or tangled condition
         [syn: unsnarling, untangling, disentanglement,
         extrication]