The Collaborative International Dictionary of English v.0.48:

Dijudicate \Di*ju"di*cate\, v. i. [imp. & p. p. Dijudicated;
   p. pr. & vb. n. Dijucating.] [L. dijudicatus, p. p. of
   dijudicare to decide; di- = dis- + judicare to judge.]
   To make a judicial decision; to decide; to determine. [R.]
   --Hales.
   [1913 Webster]