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单词 naltrexone
释义

naltrexone/nalʹtreksohn/ noun

a drug, C20H23NO4, that opposes the action of narcotics, esp heroin, and is used in the treatment of drug addiction to lessen withdrawal symptoms

[contraction of N-allylnoroxymorphone (see naloxone), with the arbitrary insertion of trex as in methotrexate]
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