a nonaddictive substance, C20H23NO4, used in the treatment of heroin addiction and opiate overdose.
Origin of naltrexone
First recorded in 1970–75; by rearrangement of parts of its chemical name
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for naltrexone
Contemporary Examples of naltrexone
The three main types of medication for opiate withdrawal and recovery are methadone, buphrenorphine, and naltrexone.Is Weed the Secret to Beating Opiate Addiction?
Tracey Mitchell, Abby Haglage
September 5, 2014
a narcotic antagonist, similar to morphine, used chiefly in the treatment of heroin addiction
Word Origin for naltrexone
C20: from N-al (lylnor) ox (ymorph) one, + the arbitrary insertion of -trex-
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
An endorphin and narcotic antagonist. It is devoid of pharmacologic action when administered in the absence of narcotics.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.