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.
The suppliers often market the drugs by listing their chemical identifier and social media contact details. Jonathan Moens — Bellingcat, STAT, 18 June 2026 Defense contractor Leonardo is promoting a new technology called SignalTrace that will package plate cameras with sensors that can scrape unique identifiers tied to your smart devices and make that data available to law enforcement. Adam Ismail, The Drive, 17 June 2026 To determine how many of those individuals were specifically detained or deported, ABC News matched records across both databases using unique identifiers such as the date of arrest, gender, country of citizenship, and birth year. Laura Romero, ABC News, 12 June 2026 The city uses the PassportParking app, a mobile-phone payment option using license plate numbers as unique identifiers that allows users to pay for parking with a credit or debit card. Mary Divine, Twin Cities, 10 June 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 22 Jun. 2026.

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