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A potent synthetic narcotic drug, C21H27NO, that is less addictive than morphine or heroin and is used as a substitute for these drugs in addiction treatment programs. It may also be used for chronic pain management.

[Short for methadone hydrochloride : (di)meth(yl) + a(mino) + d(iphenyl) + (heptan)one, a ketone (heptan(e) + -one).]


(ˈmɛθəˌdəʊn) or


(Pharmacology) a narcotic analgesic drug similar to morphine, used to treat opiate addiction. Formula: C21H27NO
[C20: from (di)meth(yl) + a(mino) + d(iphenyl) + -one]


(ˈmɛθ əˌdoʊn)

also meth•a•don


a synthetic narcotic, C21H28ClNO, similar to morphine but effective orally, used in the relief of pain and as a heroin substitute in the treatment of heroin addiction.
[1947, Amer.; meth (yl) + a (mino) + d (iphenyl) + (heptan)one a ketone derivative of heptane]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.methadone - synthetic narcotic drug similar to morphine but less habit-formingmethadone - 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


[ˈmeθəˌdəʊn] Nmetadona f


n (Pharm) → Methadon nt


n. metadona, droga sintética potente de acción narcótica menos intensa que la morfina.


n metadona
References in periodicals archive ?
The trust bought the property for $500,000 in July 2010 from the heirs of Adolphine Fletcher Terry, who included Elizabeth Terry Foti, Susan Terry Borne, Ellen Fletcher Terry, Tonya Terry, Joan Terry Oliver and Joseph Terry.
In contrast to the original, painted in 1832, which depicts the artist's sister Adolphine, Juszkiewicz's version does not focus on the person, but on a fragment of her garment, turning it into an improbable accumulation of fabric.
According to Adolphine Schwartz, who had her nose operated on by Joseph, "When he felt that someone suffered from a 'Jewish nose,' he would operate for free.