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[lahy-duh-keyn] /ˈlaɪ dəˌkeɪn/
noun, Pharmacology
a synthetic crystalline powder, C 14 H 22 N 2 O, used as a local anesthetic and also in the management of certain arrhythmias.
Also called lignocaine.
(acetani)lid(e) + -o- + -caine, extracted from cocaine (to designate an anesthetic) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for lidocaine
  • lidocaine, an anesthetic agent that traces its history back to cocaine from coca leaves.
  • The others were told that they'd been given lidocaine, an anaesthetic.
  • Some doctors recommend that patients try a topical application of lidocaine to see if it helps ease pain.
  • Other drugs that may be used for acute attacks are nasal sprays of dihydroergotamine or lidocaine.
  • The use of an anesthetic spray such as lidocaine may help in preventing pain from this procedure.
  • Effective relief may come from over-the-counter remedies or a lidocaine patch but sometimes requires prescribed opiates.
  • lidocaine or another local anesthetic will be injected at the site where the cut will be made.
British Dictionary definitions for lidocaine


a powerful local anaesthetic administered by injection, or topically to mucous membranes. Formula: C14H22N2O.HCl.H2O Also called lignocaine
Word Origin
C20: from (acetani)lid(e) + -caine on the model of cocaine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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lidocaine in Medicine

lidocaine li·do·caine (lī'də-kān')
A synthetic amide used chiefly in the form of its hydrochloride as a local anesthetic and antiarrhythmic agent.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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lidocaine in Science
A synthetic amide, C14H22N2O, used chiefly in the form of its hydrochloride as a local anesthetic.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for lidocaine

synthetic organic compound used in medicine, usually in the form of its hydrochloride salt, as a local anesthetic. Lidocaine produces prompter, more intense, and longer lasting anesthesia than does procaine (Novocaine). It is widely used for infiltration, nerve-block, and spinal anesthesia in a 0.5 to 2 percent aqueous or saline solution and is also applied to mucous membranes (2 to 4 percent) for mucosal anesthesia

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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