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"
of or intended for or involved in military operations
pertaining to a process or series of actions for achieving a result; "operational difficulties"; "they assumed their operational positions"
(of quantities) imprecise but fairly close to correct; "lasted approximately an hour"; "in just about a minute"; "he's about 30 years old"; "I've had about all I can stand"; "we meet about once a month"; "some forty people came"; "weighs around a hundred pounds"; "roughly $3,000"; "holds 3 gallons, more or less"; "20 or so people were at the party"
(computer science) the area of the screen in graphical user interfaces against which icons and windows appear
a person's social heritage: previous experience or training; "he is a lawyer with a sports background"
information that is essential to understanding a situation or problem; "the embassy filled him in on the background of the incident"
the part of a scene (or picture) that lies behind objects in the foreground; "he posed her against a background of rolling hills"
relatively unimportant or inconspicuous accompanying situation; "when the rain came he could hear the sound of thunder in the background"
extraneous signals that can be confused with the phenomenon to be observed or measured; "they got a bad connection and could hardly hear one another over the background signals"
understate the importance or quality of; "he played down his royal ancestry"