Number to identify each process running on a computer
Also known as PID · process ID · pid
6 statements · 17% with external sources · numbers in brackets are citations
2 identifiers linking process identifier across the web's reference databases
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In computing, the process identifier is a number used by most operating system kernels—such as those of Unix, macOS and Windows—to uniquely identify an active process. This number may be used as a parameter in various function calls, allowing processes to be manipulated, such as adjusting the process's priority or killing it altogether.