Synonym: diacetylmorphine. Similar words: heroine, groin, heroic, heroism, asteroid, roil, roiled, adroit. Meaning: ['herəʊɪn] 
n. a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush.
n. a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush. 
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211. Objective : To explore the incidence and causes of acute gastritis among heroin addicts doing voluntary detoxification.
212. Heroin: Heterocyclic compound, a highly addictive alkaloid derivative of morphine (chemically, it is diacetylmorphine) that makes up a large portion of illicit narcotics traffic.
213. Objective : To study the antagonist - precipitated withdrawal response ( APWR ) of heroin addicts treated with naltrexone for preventing relapse.
214. Objective:To investigate the efficacy of trazodone on depression(D), anxiety(A) and drug craving(DC) of heroin addicts during and after detoxification with methadone.