modificational
/ˌmɒdɪfɪˈkeɪʃ(ə)n(ə)l/ /ˌmɒdɪfɪˈkeɪʃən(ə)l/adjective
Relating to, characterized by, or arising from modification.
Origin
Mid 19th century; earliest use found in Fitzedward Hall (1825–1901), oriental scholar and philologist. From modification + -al.