The Collaborative International Dictionary of English v.0.48:

Wolffian \Wolff"i*an\, a. (Anat.)
   Discovered, or first described, by Caspar Friedrich Wolff
   (1733-1794), the founder of modern embryology.
   [1913 Webster]

   Wolffian body, the mesonephros.

   Wolffian duct, the duct from the Wolffian body.
      [1913 Webster]