The Collaborative International Dictionary of English v.0.48:

Explicate \Ex"pli*cate\, a. [L. explicatus, p. p. of explicare.]
   Evolved; unfolded. --Jer. Taylor.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Explicate \Ex"pli*cate\, v. t. [imp. & p. p. Explicated; p.
   pr. & vb. n. Explicating.]
   1. To unfold; to expand; to lay open. [Obs.] "They explicate
      the leaves." --Blackmore.
      [1913 Webster]

   2. To unfold the meaning or sense of; to explain; to clear of
      difficulties or obscurity; to interpret.
      [1913 Webster]

            The last verse of his last satire is not yet
            sufficiently explicated.              --Dryden.
      [1913 Webster]

WordNet (r) 3.0 (2006):

explicate
    v 1: make plain and comprehensible; "He explained the laws of
         physics to his students" [syn: explain, explicate]
    2: elaborate, as of theories and hypotheses; "Could you develop
       the ideas in your thesis" [syn: explicate, formulate,
       develop]