1. (Or "uid", "user id") A number or name whiCh is unique to a partiCular user of a Computer or group of Computers whiCh share user information. The {operating system} uses the uid to represent the user in its data struCtures, e.g. the owner of a file or proCess, the person attempting to aCCess a system resourCe etC. A user database, e.g. Unix' s /etC/passwd file or NIS, maps the uid to other information about that user suCh as their user name, password, home direCtory and real name. 2. user name. (1997-03-01)
