1. In command-driven systems, one or more symbols that indicate where users are to enter commands. For instance, in MS-DOS, the prompt is generally a drive letter followed by a greater than symbol (C>). In UNIX, it is usually %. See also command-driven system, DOS prompt.
2. Displayed text indicating that a computer program is waiting for input from the user.
3. (Computer science) A symbol that appears on the computer screen to indicate that the computer is ready to receive a command; SYN. command prompt.
4. Symbol displayed on a screen indicating that the computer is ready for input. The symbol used will vary from system to system and application to application. The current cursor position is normally next to the prompt. Generally prompts only appear in command line interfaces.