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methadone

noun
🔊/ˈmeθədəʊn/
🔊/ˈmeθədəʊn/
 [uncountable]
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  1. a drug that is used to treat people who are trying to stop taking the illegal drug heroin美沙酮，美散痛（用于戒除海洛因毒瘾）Topics Social issuesc2
    Oxford Collocations DictionaryMethadone is used before these nouns:
    • clinic
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    Word Origin1940s: from its chemical name, (6-di)meth(yl)a(mino-4,4-)d(iphenyl-3-heptan)one.