username

American  

[yoo-zer-neym] / ˈyu zərˌneɪm /

noun

Computers.

1. Also called sign-in name,.  Also called login name,.  Also called sign-on name.  Also called logon 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 email address before the @ sign.

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username British  

/ 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

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Etymology

Origin of username

First recorded in 1970–75; user ¹ ( def. ) + name ( def. )

Example Sentences

A self-proclaimed menswear industry insider who goes by the username @rfkenmore on X told the Journal that most of his younger male friends in finance stick with under-the-radar brands like J.Crew and Lululemon for work wear.

From The Wall Street Journal

She can be reached on Signal at the username JournoLiz.80.

From The Wall Street Journal

Phone Friend was pulled up on my screen— their username was EyesOnTheSky_Traveler—but I hadn’t added them to my friend list yet.

From Literature

In January, a Polymarket trader with the username “HD2” bet nearly $100,000 that BlackRock executive Rick Rieder would be nominated as the next Federal Reserve chair.

From Barron's

Essayli said that on Feb. 20, law enforcement took the victim’s digital devices to try to identify the person behind the username online.

From Los Angeles Times