名詞 methadone:

1. synthetic narcotic drug similar to morphine but less habit-forming; used in narcotic detoxification and maintenance of heroin addiction
   同義詞：methadone hydrochloride, methadon, dolophine hydrochloride, fixer, synthetic heroin

meth.a.done

n.（名詞）
A potent synthetic narcotic drug, C2H 27NO, that is less addictive than morphine or heroin and is used as a substitute for these drugs in addiction treatment programs.
美沙酮：一種有效的合成麻醉藥，C2H 27NO不象嗎啡或海洛因那樣容易讓人上癮，在戒毒治療中被用作這些毒藥的替代品

來源：
Short for methadone hydrochloride
methadone hydrochloride的簡寫
(di)meth(yl)
(di)meth(yl)
a(mino)
a(mino)
d(iphenyl)
d(iphenyl)
(heptan)one [a ketone]
(heptan)one [酮類]