operational (Adjective) — Pertaining to a process or series of actions for achieving a result. ex. "operational difficulties" ex. "they assumed their operational positions"
operational (Adjective) — Fit or ready for use or service. ex. "an operational aircraft"
operational (Adjective) — (military) of or intended for or involved in military operations.
operational (Adjective) — Being in effect or operation. ex. "de facto apartheid is still operational even in the 'new' African nations"