A feature of a graphics-based operating system that enlarges the window to the size of the screen. Contrast with minimize
. See Win Maximize windows
The maximize button in Windows is the middle button with the square. In the Mac, the green plus sign (+) is officially the "zoom button," and it expands the window to a pre-set size, not the entire screen. With apps such as iTunes, clicking zoom may switch to mini mode with only playback buttons.