windowing
win dow ing |ˈwindō -iNG ˈwɪndoʊɪŋ | ▶noun Computing the use of windows for the simultaneous display of more than one item on a screen.
win ¦dow |ing |ˈwɪndəʊɪŋ | ▶noun [ mass noun ] Computing the use of windows for the simultaneous display of more than one item on a screen.