identifier
Americannoun
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something, such as a name, number, code, label, etc., that serves to identify or represent a person or thing.
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a book, computer application, or other source that one can use to identify something, such as a bird, plant, etc., by matching it with a sound, photo, or description in an inventory.
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a person who identifies someone or something.
noun
Other Word Forms
Derived Forms
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de-identifiernoun
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non-identifiernoun
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quasi-identifiernoun
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self-identifiernoun
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sub-identifiernoun
Inflected Forms
Nouns
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The way it works is guests’ faces are scanned, converted into a numerical identifier and matched with ticket data.
From Los Angeles Times ● May 20, 2026
That dollar amount served as a unique identifier in a separate disclosure table showing OBDC’s valuation methods for different categories of Level 3 investments.
From The Wall Street Journal ● May 13, 2026
It includes plans for all children to have a unique identifier number, a bit like a National Insurance number, for safeguarding purposes.
From BBC ● Feb. 27, 2025
The U.S. government is no longer issuing identification documents with an “X” identifier, which could impact some intersex individuals, Lorshbough said.
From Salon ● Feb. 12, 2025
In the spot where the identifier should have been, there were instead a censor’s thick black box and the words “I.D. Temporarily Removed from System.”
From "Escape from Mr. Lemoncello's Library" by Chris Grabenstein
UnitedHealth Group, which insured some Perfect Child patients, said “it is not at all uncommon to see ABA providers change names and” tax identifiers to avoid detection of potentially fraudulent billing.
From The Wall Street Journal ● Jun. 2, 2026
These patterns act as unique optical identifiers that are difficult to replicate, making them useful for anti-counterfeiting and traceability applications.
From Science Daily ● Apr. 21, 2026
Cox identifies subscribers by Internet Protocol addresses, unique identifiers assigned to a home or business, not necessarily an individual.
From Slate ● Nov. 28, 2025
"We would like to reiterate that no payment details or order history information has been accessed and the impacted personal data remains limited to basic personal identifiers as advised previously," they said.
From BBC ● Sep. 28, 2025
She plays the tape backward and forward, stops and starts, scribbles down identifiers she missed.
From "Orphan Train" by Christina Baker Kline
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
