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.
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. Jazz Monroe, Pitchfork, 29 Oct. 2025 Catching and reporting these early can prevent a much bigger loss. 6) Consider an identity theft protection plan Because breaches involving medical providers often expose sensitive identifiers, an identity protection service can be useful. Kurt Knutsson, FOXNews.com, 24 Oct. 2025 The agent logs only essential identifiers, avoids storing raw sensor data, caps how much and how often information is recorded, and disables third-party analytics by default. Keivan Navaie, IEEE Spectrum, 22 Oct. 2025 Services like Fingerprint leverage that information to create an identifier, but make no mistake, the data is always there. Jacob Roach, Wired News, 16 Oct. 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 30 Oct. 2025.

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