heroin
noun
her·o·in
ˈher-ə-wən 
ˈhe-rə-
: 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 U.S. but is used illicitly for its euphoric effects
Examples of heroin in a Sentence
Recent Examples on the Web
Cawthon acknowledged Cook’s troubled upbringing, involving abuse, family dysfunction and a heroin addiction.
—
Alex Brizee, Idaho Statesman, 14 June 2025
However, cannabis remains a Schedule I substance, lumped in with heroin and LSD — deemed to have no accepted medical use and a high potential for abuse.
—Laura Hartman, The Orlando Sentinel, 12 June 2025
During a search of the their residence in Clearfield County, Pennsylvania last week on June 5, about three pounds of methamphetamine, 159 grams of fentanyl, 9 grams of heroin, and $7,390 in cash were seized, according to a news release.
—Greta Cross, USA Today, 12 June 2025
The film follows his rise to fame, becoming an MTV-era superstar, his heroin addictions, his 1990 near-fatal motorcycle accident and more.
—Rachel Desantis, People.com, 10 June 2025
See All Example Sentences for heroin
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Alex Brizee, Idaho Statesman, 14 June 2025
However, cannabis remains a Schedule I substance, lumped in with heroin and LSD — deemed to have no accepted medical use and a high potential for abuse.
—Laura Hartman, The Orlando Sentinel, 12 June 2025
During a search of the their residence in Clearfield County, Pennsylvania last week on June 5, about three pounds of methamphetamine, 159 grams of fentanyl, 9 grams of heroin, and $7,390 in cash were seized, according to a news release.
—Greta Cross, USA Today, 12 June 2025
The film follows his rise to fame, becoming an MTV-era superstar, his heroin addictions, his 1990 near-fatal motorcycle accident and more.
—Rachel Desantis, People.com, 10 June 2025
See All Example Sentences for heroin
Cite this Entry
“Heroin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heroin. Accessed 20 Jun. 2025.
Copy CitationKids Definition
heroin
noun
her·o·in
ˈher-ə-wən
: a strongly addictive drug made from the opium poppy and stronger than morphine
Medical Definition
heroin
noun
her·o·in
ˈher-ə-wən
: 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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