The Collaborative International Dictionary of English v.0.48:

co-ordinate \co-ordinate\, coordinate
\co*["o]r"di*nate\(-n[=a]t), v. t. [imp. & p. p. Coordinated;
   p. pr. & vb. n. Coordinating.]
   1. To make coordinate; to put in the same order or rank; as,
      to coordinate ideas in classification.
      [1913 Webster]

   2. To give a common action, movement, or condition to; to
      regulate and combine so as to produce harmonious action;
      to adjust; to harmonize; as, to coordinate muscular
      movements.
      [1913 Webster]

   3. to be co-ordinated; as, These activities co-ordinate well.

   Syn: coordinate.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

coordinating \coordinating\ co-ordinating \co-ordinating\adj.
   (Grammar)
   joining together words or phrases of equal grammatical rank.
   subordinative

   Syn: coordinative.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

coordinating
    adj 1: serving to connect two grammatical constituents of
           identical construction; "`and' in `John and Mary' or in
           `John walked and Mary rode' is a coordinating
           conjunction; and so is `or' in `will you go or stay?'"
           [syn: coordinating(a), coordinative] [ant:
           subordinating(a), subordinative]