identifier

noun

iden·​ti·​fi·​er ī-ˈden-tə-ˌfī(-ə)r How to pronounce identifier (audio)
ə-
: one that identifies

Examples of identifier in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
ISBNs later helped support the digitization of distribution, inventory control, and sales tracking by providing a unique identifier for each edition of a book. Encyclopedia Britannica, 24 Apr. 2026 Calculating Your Home’s Numerology The specific numbers of your home—the street number and, if applicable, unit identifier—are the most critical parts in determining the numerology. Kristina McGuirk, Better Homes & Gardens, 23 Apr. 2026 Using market-leading, interoperable identifiers to enable a unified view of the customer empowers AI to understand individual customer journeys and influence them through cohesive, personalized experiences. Jarrod Martin, Fortune, 13 Apr. 2026 Both Tuesday’s and Wednesday’s advisories provide the IP addresses and other identifiers of the attackers’ infrastructure. Dan Goodin, ArsTechnica, 8 Apr. 2026 See All Example Sentences for identifier

Word History

First Known Use

1807, in the meaning defined above

Time Traveler
The first known use of identifier was in 1807

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Cite this Entry

“Identifier.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/identifier. Accessed 27 Apr. 2026.

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