Alternatively referred to as a print screen, screen dump, snapshot, or screen capture, a screen shot or screenshot is an image of what's currently displayed on a screen. Screenshots can be created by a software program or operating system. Once a screenshot is captured, it can be saved as an image file (e.g., GIF or JPEG). You can also manipulate and print the image after it is saved. The picture is an example screenshot from the game StarCraft.
To learn more, see: How to take a screenshot.