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naltrexone

[nal-trek-sohn]
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noun Pharmacology.
  1. 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. 2018

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British Dictionary definitions for naltrexone

naltrexone

noun
  1. a narcotic antagonist, similar to morphine, used chiefly in the treatment of heroin addiction

Word Origin

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

naltrexone in Medicine

naltrexone

(năl-trĕksōn)
n.
  1. 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.