identifier
Americannoun
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identifiers
plural
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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
The contact sent her a link to a chatbot on messaging app Telegram which told her they would be contacted by a person with a unique identifier.
From BBC ● May 25, 2025
Furthermore, some critics of Rapid DNA have warned that by probing into a unique identifier that reveals sensitive medical information, the technology is a violation of privacy and civil liberties.
From Salon ● Aug. 5, 2024
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
Since the public rolls don’t include voters’ unique identifiers, people at the lab also knew linking them to HSI’s data would produce mismatches — what the staffer called an “ungodly” number of false positives.
From Salon ● Aug. 15, 2026
It says it discovered that 47 IP addresses owned by Meta — that is, digital identifiers of internet accounts — had downloaded its movies without permission.
From Los Angeles Times ● Jun. 18, 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
When we entrust digital platforms with our biometric data, we hand over unique, irreplaceable biological identifiers.
From The Wall Street Journal ● Feb. 3, 2026
The regime then assigned identifiers on the cover of the cards.
From "Salt to the Sea" by Ruta Sepetys
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.
