The term "pop-up" has two computer-related meanings. One refers to a window and the other is a type of menu.
Regardless of where pop-up advertisements appear on your screen, they can be pretty annoying. Fortunately, browser developers have realized this and most Web browsers now include an option to block pop-up windows. If you are noticing pop-up windows appear on your computer when your browser is not open, you may have an adware program running on your computer. The best solution to this problem is to run an anti-spyware program that will locate and remove the malware from your system.
2. Pop-Up Menu A pop-up menu is a type of menu that pops up on the screen when the user right-clicks a certain object or area. It can be also called a contextual menu since the menu options are relevant to where the user right-clicked on the screen. Pop-up menus provide quick access to common program functions and are used by most operating systems and applications.