The unique name given to (or chosen by) a user on some Web sites and commercial systems. The User ID and sometimes an accompanying password is used by the service to allow access to the system and/or to track information about you.
A string of letters and/or numbers (e.g., your name) that uniquely identifies you online. Your userID is also the first part of your e-mail address. For your protection, every userID has an associated password.
A unique name given to a user on a system. An example of a userid is the first part of an e-mail address, which distinguishes the user from all other users on the system.
(or User ID)The unique name given to (or chosen by) a user on some Web sites and commercial systems. The User ID and sometimes a password is used by the service to allow access to the system.
The unique name given to a user on a system for his or her account. The complete address can be used for e-mail (e.g., Bill Clinton's address is [email protected]).