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.
As a geographic identifier, the Bible Belt has never had precise boundaries. Encyclopedia Britannica, 30 Apr. 2026 Each bag has an identifier carved discreetly into its interior, a number that is uniquely its own. Mark Ellwood, Robb Report, 28 Apr. 2026 Non-fungible tokens, known as NFTs, are electronic identifiers confirming a digital collectible is real by recording the details on a digital ledger known as a blockchain. ABC News, 28 Apr. 2026 If those centralized systems are breached – or the datasets are linked across platforms, vendors or data brokers – your face can become a sort of persistent identifier, which can be used to expose or track you. Jonathan S. Weissman, The Conversation, 28 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 5 May. 2026.

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