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.
These include cross-platform alerts, frequently changing Bluetooth identifiers, and end-to-end encryption. Aamir Khollam, Interesting Engineering, 26 Jan. 2026 Officer uniforms must display visible Phoenix police identifiers. Jose R. Gonzalez, AZCentral.com, 23 Jan. 2026 OpenEvidence is free to use by any clinician with a national provider identifier number. Mario Aguilar, STAT, 21 Jan. 2026 The model replaces the traditional assignment of vulnerability identifiers (CVE IDs). Kate O'Flaherty, Forbes.com, 20 Jan. 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 4 Feb. 2026.

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