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.
2.
the part of an e-mail address before the @ sign.
Also called user ID.
Examples from the web for username
Visit my blog at the website of my username for more information.
As far as this subject goes, my username says it all: nothing.
The username is randomly generated by the site, haven't got round to changing it.
Your username and general profile confirm your story.
Your username was created by you during the registration process.
To receive your username please enter your email address below.
British Dictionary definitions for username
username
/ˈjuːzəˌneɪm/
noun
1.
(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
Contemporary definitions for username
noun
the unique set of characters identifying a user of a shared computer program, system, or network, which allows access when coupled with a password; also written user name , also called user ID