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
These details along with someone's IP address - the unique identifier used by internet devices - were previously prohibited by Google for ad targeting.
From BBC ● Feb. 15, 2025
She doesn’t use it as Nessa’s identifier but instead, uses it to poke fun at people’s misplaced assumptions of Nessa.
From Salon ● Dec. 5, 2024
It is customary for the first identifier to have the species named after him, or any name he chooses, so long as it is not already in use.
From "The Evolution of Calpurnia Tate" by Jacqueline Kelly
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
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
“Secure ballot envelope identifiers provide a reliable, auditable mechanism to enforce Federal law without unduly burdening or infringing on the rights of eligible voters,” the order reads.
From Los Angeles Times ● Mar. 31, 2026
Similarly adapted from existing Lego components, these possess digital identifiers triggering different sounds or reactions when they detect and interact with each other.
From BBC ● Jan. 6, 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.
