The Collaborative International Dictionary of English v.0.48:

Gongorism \Gon"go*rism\, n.
   An affected elegance or euphuism of style, for which the
   Spanish poet Gongora y Argote (1561-1627), among others of
   his time, was noted.

         Gongorism, that curious disease of euphuism, that broke
         out simultaneously in Italy, England, and Spain. --The
                                                  Critic.

         The Renaissance riots itself away in Marinism,
         Gongorism, Euphuism, and the affectations of the
         H[^o]tel Rambouillet.                    --J. A.
                                                  Symonds.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Gongorism
    n 1: an affected elegance of style that was introduced into
         Spanish literature by the poet Gongora

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "Gongorism":
   affectation, affectedness, artfulness, artifice, artificiality,
   euphemism, euphuism, hyperelegance, manneredness, mannerism,
   overelaboration, overelegance, overniceness, overrefinement,
   preciosity, preciousness, pretentiousness, purism, unnaturalness