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heroin

play
noun her·o·in \ˈher-ə-wən, ˈhe-rə-\

Simple Definition of heroin

  • : a powerful illegal drug that is made from morphine

Source: Merriam-Webster's Learner's Dictionary

Full Definition of heroin

  1. :  a strongly physiologically addictive narcotic C21H23NO5 that is made by acetylation of but is more potent than morphine and that is prohibited for medical use in the United States but is used illicitly for its euphoric effects

heroinism

play \-wə-ˌni-zəm\ noun

Origin and Etymology of heroin

from Heroin, a trademark


First Known Use: 1898


HEROIN Defined for Kids

heroin

play
noun her·o·in \ˈher-ə-wən\

Definition of heroin for Students

  1. :  a very harmful illegal drug that is highly addictive and is made from morphine




Medical Dictionary

heroin

play
noun her·o·in \ˈher-ə-wən\

Medical Definition of heroin

  1. :  a strongly physiologically addictive narcotic C21H23NO5 that is made by acetylation of but is more potent than morphine and that is prohibited for medical use in the United States but is used illicitly for its euphoric effects—called also acetomorphine, diacetylmorphine, diamorphine




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