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.
To keep both out of harm’s way, certain identifiers and details that could put them at risk are not mentioned here. Georg Szalai, HollywoodReporter, 5 Feb. 2026 Smartphones also transmit location signals, device identifiers, advertising IDs, usage patterns and app behavior data. Kurt Knutsson, FOXNews.com, 3 Feb. 2026 Tools like electronic visit verification and unique caregiver identifiers help confirm when and where care is delivered, reducing the risk of duplicate payments and ensuring Medicaid dollars are tied to real services. Miki Kapoor, New York Daily News, 3 Feb. 2026 That would allow consumers and insurers to clearly see which provider is billing them, rather than allowing a single billing identifier for all locations a hospital or other entity might own . Ken Alltucker, USA Today, 1 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

Browse Nearby Words

Cite this Entry

“Identifier.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/identifier. Accessed 11 Feb. 2026.

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