A display method that causes a portion of the display to appear like a negative of the regular display. If the display screen normally displays light images against a dark background, putting it in reverse video mode will cause it to display dark images against a light background.
Many programs use reverse video to highlight items, such as selected text or menu options. Also, some systems allow you to change the mode for all displays, so you can choose the display that is most comfortable for you. Some people prefer dark images on a light background, while others prefer light images on a dark background.