Source : Webster's Revised Unabridged Dictionary (1913)

Appositional \Ap`po*si"tion*al\, a.
   Pertaining to apposition; put in apposition syntactically.
                                                  --Ellicott.

Source : WordNet®

appositional
     adj : relating to or being in apposition; "an appositive noun"
           [syn: {appositive}]