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[yoo-zer-neym] /ˈyu zərˌneɪm/
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. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for user name


(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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Contemporary definitions for user name

See username


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

Word Origin

1971-76's 21st Century Lexicon
Copyright © 2003-2014, LLC
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Word Origin and History for user name



by 1982, from user + name (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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user name in Technology

operating system, security
(Or "logon") A unique name for each user of computer services which can be accessed by several persons.
Users need to identify themselves for accounting, security, logging, and resource management. Usually a person must also enter a password in order to access a service. Once the user has logged on the operating system will often use a (short) user identifier, e.g. an integer, to refer to them rather than their user name.
User names can usually be any short string of alphanumeric characters. Common choices are first name, initials, or some combination of first name, last name, initials and an arbitrary number. User names are often assigned by system administrators according to some local policy, or they may be chosen by the users themselves.
User names are often also used as mailbox names in electronic mail addresses.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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