The Collaborative International Dictionary of English v.0.48:

Venditation \Ven`di*ta"tion\, n. [L. venditatio, fr. venditare,
   venditatum, to offer again and again for sale, v. freq. of
   vendere. See Vend.]
   The act of setting forth ostentatiously; a boastful display.
   [Obs.] --B. Jonson.
   [1913 Webster]