The Collaborative International Dictionary of English v.0.48:

Succinuric \Suc`cin*u"ric\, a. (Chem.)
   Pertaining to, or designating, an acid amide, analogous to
   succinamic acid, which is obtained as a white crystalline
   substance by heating urea with succinic anhydride. It is
   known also in its salts.
   [1913 Webster]