methadone hydrochloride

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Noun1.methadone hydrochloride - synthetic narcotic drug similar to morphine but less habit-formingmethadone hydrochloride - synthetic narcotic drug similar to morphine but less habit-forming; used in narcotic detoxification and maintenance of heroin addiction
narcotic - a drug that produces numbness or stupor; often taken for pleasure or to reduce pain; extensive use can lead to addiction