Translation of "username" into English

The name by which a user is identified to a computer system or network. During the logon process, the user must enter the username and the correct password. If the system or network is connected to the Internet, the username generally corresponds to the leftmost part of the user's e-mail address (the portion preceding the @ sign, as in username@company.com).

A unique name that identifies a user account to Windows. An account's user name must be unique among the other group names and user names within its own domain or workgroup.