The Collaborative International Dictionary of English v.0.48:

Coordinate \Co*["o]r"di*nate\, a. [Pref. co- + L. ordinatus, p.
   p. of ordinare to regulate. See Ordain.]
   Equal in rank or order; not subordinate.
   [1913 Webster]

         Whether there was one Supreme Governor of the world, or
         many coordinate powers presiding over each country.
                                                  --Law.
   [1913 Webster]

         Conjunctions joint sentences and coordinate terms.
                                                  --Rev. R.
                                                  Morris.
   [1913 Webster]

   Coordinate adjectives, adjectives disconnected as regards
      one another, but referring equally to the same subject.

   Coordinate conjunctions, conjunctions joining independent
      propositions. --Rev. R. Morris.
      [1913 Webster] co-ordinate