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.
Days earlier, Russia charged Telegram's founder with aiding terrorism, renewing attention to reporting that the app leaks a fixed identifier able to track users at the network level. — Susie Violet Ward, Forbes.com, 31 July 2026 Previous reviews and data-matching efforts on voter rolls that lack a unique identifier like a Social Security number have been notoriously error-prone, Becker noted. — Miles Parks, NPR, 31 July 2026 Stokes works as an identifier for Idaho Insect ID, a service offered by the University of Idaho that provides free insect identification for the public. — Hannah Smith july 22, Idaho Statesman, 22 July 2026 For the next three decades, this logo would be Toyota’s primary identifier on automobiles, undergoing only minor modifications in font style and color for aesthetics and consumer appeal. — Encyclopedia Britannica, 17 July 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 5 Aug. 2026.

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More from Merriam-Webster on identifier

Nglish: Translation of identifier for Spanish Speakers

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