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.
But travelers must be prepared to submit biometric identifiers. Jeanne Bonner, CNN Money, 26 Mar. 2026 The company accepts payments with cryptocurrency and even cash by mailing it to Mullvad along with your unique account identifier. Justyn Newman, PC Magazine, 22 Mar. 2026 That data can include browsing behavior, device details, location history and in some cases highly sensitive identifiers. Kurt Knutsson, FOXNews.com, 14 Mar. 2026 Law enforcement agencies across the country have turned to artificial intelligence to automate labor-intensive tasks, from recognizing biometric identifiers to tracking vehicles to finding leads within thousands of pieces of evidence. Perry Vandell, AZCentral.com, 27 Feb. 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 29 Mar. 2026.

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