lidocaine

noun

li·​do·​caine ˈlī-də-ˌkān 

: 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

Some of these contain hydrocortisone, witch hazel, zinc oxide or lidocaine, which can help reduce itching and swelling. —Daryl Austin, USA Today, 21 Oct. 2025

Tests then confirmed he'd been given a potentially lethal dose of the drug lidocaine. —Becca Longmire, People.com, 8 Sep. 2025

For instance, when asked directly how to synthesize lidocaine, the LLM acquiesced only 0.7 percent of the time. —Jennifer Ouellette, ArsTechnica, 3 Sep. 2025

The same strategy worked 100% of the time when researchers asked the AI to tell them how to synthesize vanillin, the organic compound that provides vanilla’s scent, before asking how to synthesize lidocaine. —Marco Quiroz-Gutierrez, Fortune, 2 Sep. 2025

Word History

Etymology

acetanilid + -o- + -caine

First Known Use

circa 1949, in the meaning defined above

Rhymes for lidocaine

• aeroplane
• appertain
• ascertain
• capitaine
• cassegrain
• cellophane
• chatelaine
• counterpane
• entertain
• gethsemane
• halothane
• hurricane

Medical Definition

lidocaine

noun

li·​do·​caine ˈlīd-ə-ˌkān 

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

called also lignocaine

see xylocaine