The Collaborative International Dictionary of English v.0.48:

Juridic \Ju*rid"ic\, Juridical \Ju*rid"ic*al\, a. [L. juridicus
   relating to the administration of justice; jus, juris, right,
   law + dicare to pronounce: cf. F. juridique. See Just, a.,
   and Diction.]
   Pertaining to a judge or to jurisprudence; acting in the
   distribution of justice; used in courts of law; according to
   law; legal; as, juridical law. "This juridical sword."
   --Milton.
   [1913 Webster]

         The body corporate of the kingdom, in juridical
         construction, never dies.                --Burke.
   [1913 Webster]

   Juridical days, days on which courts are open.
      [1913 Webster]

WordNet (r) 3.0 (2006):

juridical
    adj 1: of or relating to the law or jurisprudence; "juridical
           days" [syn: juridical, juridic]
    2: relating to the administration of justice or the function of
       a judge; "judicial system" [syn: judicial, juridical,
       juridic]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "juridical":
   actionable, applicable, authorized, competent, constitutional,
   critical, judgmental, judicative, judicatorial, judicatory,
   judicial, judiciary, judicious, juridic, jurisdictional,
   jurisdictive, juristic, just, justiciable, kosher, lawful,
   lawmaking, legal, legislative, legit, legitimate, licit,
   magisterial, rightful, sanctioned, statutory, valid,
   within the law



Bouvier's Law Dictionary, Revised 6th Ed (1856):

JURIDICAL. Signifies used in courts of law; done in conformity to the laws
of the country, and the practice which is there observed.