1. (

• operational

) pertaining to a process or series of actions for achieving a result; "operational difficulties"; "they assumed their operational positions" ;

2. (

• functional ,
• usable ,
• useable ,
• operable ,
• operational

) 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" ;

3. (

• operational

) (military) of or intended for or involved in military operations ;

4. (

• operational ,
• 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" ;