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

Example Sentences

Recent Examples on the Web In addition to the lot codes in the PDF file, there’s another identifier to help customers. Chris Smith, BGR, 28 Sep. 2022 Changes Apple made last year led some 80% of its users to disable an identifier widely used for ad targeting. Leticia Miranda, NBC News, 28 Sep. 2022 Her landlord also sent her an email saying that extra identifier was not needed. Theresa Vargas, Washington Post, 17 Aug. 2022 Such linkages can be achieved with technologies that de-identify a patient’s personal information (like name and address) and replace it with an anonymous identifier. Elenee Argentinis, STAT, 12 Aug. 2022 Apple’s Facebook-breaker feature, App Tracking Transparency (ATT), asks people to opt-in to tracking via the identifier for advertisers (IDFA). Kate O'flaherty, Forbes, 13 Aug. 2022 The lack of a geographic identifier makes for strange reading. Los Angeles Times, 5 July 2022 Google still enables this tracking identifier by default, and until recently did not even provide consumers with an opt-out. Jon Brodkin, Ars Technica, 24 June 2022 Despite Latinx being around for years, only 23% of Hispanics in the U.S. are familiar with the term and only 3% use it as an identifier. Selena Barrientos, Good Housekeeping, 15 July 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'identifier.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1807, in the meaning defined above

Time Traveler
The first known use of identifier was in 1807

Dictionary Entries Near identifier

Cite this Entry

“Identifier.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2022.

More from Merriam-Webster on identifier

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