meth·a·done
noun/ˈmeθədəʊn/
/ˈmeθədəʊn/
[uncountable]- 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） Oxford Collocations DictionaryMethadone is used before these nouns:- clinic
Word Origin1940s: from its chemical name, (6-di)meth(yl)a(mino-4,4-)d(iphenyl-3-heptan)one.