Desktop has several meanings in the context of computer science. Physical desktop computer - a computer that is designed to sit on a desk and is not designed to be carried around, as is the case with laptops. Operating System Workspace - a screen that displays icons, widgets and other elements that allow the user to interact with the computer. It's kind of like the "home page" of your computer. Desktop application - an application designed to run on desktop computers, as opposed to mobile applications or web applications.