The Collaborative International Dictionary of English v.0.48:
Terminative \Ter"mi*na*tive\, a. Tending or serving to terminate; terminating; determining; definitive. --Bp. Rust. -- Ter"mi*na*tive*ly, adv. --Jer. Taylor. [1913 Webster]WordNet (r) 3.0 (2006):
terminative adj 1: coming to an end; "a contract terminative with the end of the war"