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.
Whether there was one Supreme Governor of the world, or
many coordinate powers presiding over each country.
Conjunctions joint sentences and coordinate terms.
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