naloxone

[nuh-lok-sohn, nal-uh k-sohn]

noun Pharmacology.

a narcotic analgesic antagonist, C19H21NO4, used in the reversal of acute narcotic analgesic respiratory depression.

Origin of naloxone

1960–65; by shortening and rearrangement of dihydroxy-, morphinan-, and -one, components of its chemical name

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for naloxone

Contemporary Examples of naloxone

The second is naloxone, the antagonist, meaning that it stops the action of other opiates, like heroin.
This Anti-Heroin Drug Is Now King of the Jailhouse Drug Trade
Daniel Genis
July 17, 2014
In other circumstances, naloxone (also known as Narcan) might work.
Legal, Regulated Heroin Could Have Saved Philip Seymour Hoffman
Valerie Vande Panne
February 18, 2014
One such drug is naloxone, which can be used to reverse any type of opiate overdose (heroin is an opiate).
When Rehab Doesn’t Work
Lizzie Crocker
July 18, 2013

British Dictionary definitions for naloxone

naloxone

noun

a chemical substance that counteracts the effects of opiates by binding to opiate receptors on cells

Word Origin for naloxone

C20: from N-al (lylnor) ox (ymorph) one, the chemical name

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