The Collaborative International Dictionary of English v.0.48:

Enucleation \E*nu`cle*a"tion\, n. [Cf. F. ['e]nucl['e]ation.]
   The act of enucleating; elucidation; exposition.
   [1913 Webster]

         Neither sir, nor water, nor food, seem directly to
         contribute anything to the enucleation of this disease.
                                                  --Tooke.
   [1913 Webster]

WordNet (r) 3.0 (2006):

enucleation
    n 1: surgical removal of something without cutting into it; "the
         enucleation of the tumor"