Operative

Having the power of acting; hence, exerting force, physical or moral; active in the production of effects; as, an operative motive.

Producing the appropriate or designed effect; efficacious; as, an operative dose, rule, or penalty.

Based upon, or consisting of, an operation or operations; as, operative surgery.

A skilled worker; an artisan; esp., one who operates a machine in a mill or manufactory.

relating to or requiring or amenable to treatment by surgery especially as opposed to medicine; "a surgical appendix"; "a surgical procedure"; "operative dentistry"