Definition of methadone in English:

methadone

Syllabification: meth·a·done
Pronunciation: /ˈmeTHəˌdōn
 
/

noun

A synthetic analgesic drug that is similar to morphine in its effects but longer acting, used as a substitute drug in the treatment of morphine and heroin addiction.
More example sentences
  • I am pumped full of drugs: methadone, morphine, opium, marijuana, the whole lot.
  • The alternative treatment for heroin addiction is the drug methadone which is taken in tablet form.
  • Only this week I have had ketamine and methadone, both controlled drugs that merit an article themselves.

Origin

1940s: from its chemical name, (6-di)meth(yl)a(mino-4,4-)d(iphenyl-3-heptan)one.

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