fit or ready for use or service; "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order"使用またはサービスに適したさま、あるいはそれらの準備ができたさま使用可能
例:an operational aircraft 操作可能な航空機
pertaining to a process or series of actions for achieving a result; "operational difficulties"; "they assumed their operational positions"結果を達成するためのプロセスまたは一連の行動について操作的
例:They assumed their operational positions. 彼らは、彼らの操作上の職を引き受けた。