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.
There’s also no easy way for users to link another X profile to real-world identifiers such as phone numbers. Zak Doffman, Forbes.com, 3 June 2025 DuckDuckGo, for instance, was already blocking domains and IP addresses associated with the trackers, preventing the browser from sending any identifiers to Meta. Dan Goodin, ArsTechnica, 3 June 2025 The State Department has required visa applicants to provide social media identifiers on immigrant and nonimmigrant visa application forms since 2019, a spokesperson said. Maddie Araujo, CNN Money, 31 May 2025 We, in collaboration with our partners, store and/or access information on a user's device, including but not limited to IP addresses, unique identifiers, and browsing data stored in cookies, in order to process personal data. Walden Green, Pitchfork, 13 May 2025 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 7 Jun. 2025.

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