iden·​ti·​fi·​er | \ ī-ˈden-tə-ˌfī(-ə)r , ə-\

Definition of identifier

: one that identifies

Examples of identifier in a Sentence

Recent Examples on the Web

The patent application also describes strategies for keeping the device locked unless the user activates it with a PIN or biometric identifier. Rachel Becker, The Verge, "Juul plans to release new Bluetooth-enabled vapes internationally," 1 Aug. 2018 That outline of Apple’s current notch shape has already become a brand identifier for Apple. Vlad Savov, The Verge, "2018 was a weird notch year — what’s next?," 18 Dec. 2018 Tracking cookies store some kind of unique identifier that represents your browser. Peter Bright, Ars Technica, "Firefox 63 blocks tracking cookies, offers a VPN when you need one," 23 Oct. 2018 This rig can scan faces, clothing, facial tattoos, and other identifiers so well that the algorithms that process the images are now at 50 percent accuracy for correctly identifying a pedestrian. Popular Mechanics Editors, Popular Mechanics, "The World of 2045," 14 Oct. 2018 In fact, Apple came out with a new way of setting identifiers as a result of that type of abuse. Eric Johnson, Recode, "It may be ‘data journalism,’ but Julia Angwin’s new site the Markup is nothing like FiveThirtyEight," 27 Sep. 2018 Pan’s critics have created their own hashtag identifier, #blockedbyPan. Don Thompson, The Seattle Times, "California lawmaker sued for blocking critics’ Twitter feeds," 30 July 2018 These identifiers are generally found on items such as village letterhead, apparel, the village website, equipment, banners etc. Genevieve Bookwalter,, "Lincolnwood looking to take up village rebranding effort," 14 May 2018 Also on Tuesday, the council gave final approval to a bill that allows the city’s drivers to choose a gender-neutral identifier on their driver’s licenses, something the D.C. Department of Motor Vehicles has permitted since July 2017. Reis Thebault, Washington Post, "In D.C., no more license suspensions for drivers with unpaid tickets," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'identifier.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of identifier

1807, in the meaning defined above

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Last Updated

16 Feb 2019

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Time Traveler for identifier

The first known use of identifier was in 1807

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Rhyming Dictionary: Words that rhyme with identifier

Nglish: Translation of identifier for Spanish Speakers

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excited commotion or publicity

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