li·​do·​caine | \ ˈlī-də-ˌkān How to pronounce lidocaine (audio) \

Definition of lidocaine

: a crystalline compound C14H22N2O that is used in the form of its hydrochloride as a local anesthetic and as an antiarrhythmic agent

Examples of lidocaine in a Sentence

Recent Examples on the Web Last year, Baffert had multiple high-profile horses fail post-race drug tests, including the filly Gamine and Charlatan, who both showed traces of lidocaine after running on Arkansas Derby day last year. Dan Wolken, USA TODAY, "Opinion: Bob Baffert's record seventh Kentucky Derby win shows why you should never bet against him," 2 May 2021 The researcher removed the octopus 20 minutes later and administered lidocaine to numb her arm. Anna Blaustein, Scientific American, "Octopus ‘Teachers’ Demonstrate They Feel Emotional Pain," 23 Apr. 2021 Lokanc and some others who testified said the gender of a horse makes no difference in testing for lidocaine. Beth Harris, ajc, "Arkansas officials hear Baffert's appeal of drug positives," 20 Apr. 2021 All patients received injections of preservative-free methylprednisolone, preservative-free normal saline, lidocaine, and skin prep with povidone-iodine. Jason Dearen, Star Tribune, "EXCERPT: 'Kill Shot' probes shadow industry, deadly disease," 23 Feb. 2021 First, it was reported May 26 that Charlatan and Gamine -- another horse who won at Oaklawn on May 2 -- both tested positive for lidocaine, a local numbing agent, after their Oaklawn races. Arkansas Online, "The year sports stopped: Effects of covid-19 touched all levels across state," 25 Dec. 2020 Charlatan won one of the divisions of the Arkansas Derby, but was subsequently disqualified after a positive for lidocaine. John Cherwa, Los Angeles Times, "After highs and lows in 2020, Bob Baffert sets his focus on Santa Anita," 25 Dec. 2020 When two of his horses tested positive for lidocaine at Oaklawn Park earlier this year, it was blamed on an employee wearing a pain relieving patch on his back and inadvertently transferring it to the horses. Dan Wolken, USA TODAY, "Opinion: By handing drug enforcement to U.S. Anti-Doping Agency, can horse racing clean up its act?," 22 Dec. 2020 In May, Gamine and a colt named Charlatan, who won a division of the Arkansas Derby, tested positive for lidocaine, a numbing agent. Joe Drape, New York Times, "Bob Baffert at the Breeders’ Cup: Awash in Favorites and Suspicion," 5 Nov. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lidocaine.' 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 lidocaine

circa 1949, in the meaning defined above

History and Etymology for lidocaine

acetanilid + -o- + -caine

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Time Traveler for lidocaine

Time Traveler

The first known use of lidocaine was circa 1949

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Statistics for lidocaine

Last Updated

9 May 2021

Cite this Entry

“Lidocaine.” Dictionary, Merriam-Webster, Accessed 11 May. 2021.

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li·​do·​caine | \ ˈlīd-ə-ˌkān How to pronounce lidocaine (audio) \

Medical Definition of lidocaine

: a crystalline compound C14H22N2O used as a local anesthetic often in the form of its hydrochloride C14H22N2O·HCl

called also lignocaine

— see xylocaine

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