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.
Location data can expose visits to doctors, pharmacies, places of worship and other sensitive locations, especially when it gets combined with advertising identifiers and other information about you. — Kurt Knutsson, FOXNews.com, 14 Oct. 2026 In its latest court filing, AFA acknowledged that Spirit agreed that employees’ identification numbers won’t be part of what’s sold, for example, because they’ll be replaced by randomized identifiers. — Miami Herald, 10 Oct. 2026 Discovery and development Clozapine was named in 1959 by researchers at the Swiss pharmaceutical company Wander AG, where it had been initially synthesized the previous year and assigned the identifier HF-1854. — Encyclopedia Britannica, 7 Oct. 2026 Virtual accounts use unique identifiers to track payments while funds remain in the underlying physical account. — Andreas Schweitzer, Forbes.com, 24 Sep. 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

Rhymes for identifier

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Browse Nearby Words

identificatory
identifier
identify
See all Nearby Words

Cite this Entry

“Identifier.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/identifier. Accessed 20 Oct. 2026.

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