username [yoo-zer-neym] noun Computers.
- Also called login name, logon name, sign-in name, sign-on name. a unique sequence of characters used to identify a user and allow access to a computer system, computer network, or online account.
- the part of an email address before the @ sign.
Also called user ID. British Dictionary definitions for user id username noun
- computing a name that someone uses for identification purposes when logging onto a computer, using chatrooms, or as part of his or her e-mail address
Word Origin and History for user id username n.