The Collaborative International Dictionary of English v.0.48:
Appositional \Ap`po*si"tion*al\, a. Pertaining to apposition; put in apposition syntactically. --Ellicott. [1913 Webster]WordNet (r) 3.0 (2006):
appositional adj 1: relating to or being in apposition; "an appositive noun" [syn: appositional, appositive]