definition of
operational

[1] #1 operational a. pertaining to a process or series of actions for achieving a result; "operational difficulties"; "they assumed their operational positions". wn

[2] #2 operational s. [functional, usable, useable, operable] 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". wn

[3] #3 operational s. [in operation, operating] being in effect or operation; "de facto apartheid is still operational even in the 'new' African nations"- Leslie Marmon Silko; "bus service is in operation during the emergency"; "the company had several operating divisions". wn