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

heroinism

ˈher-ə-wə-ˌni-zəm 

ˈhe-rə-

noun

Examples of heroin in a Sentence

Recent Examples on the Web

As part of the investigation, law enforcement seized over 2,000 pounds of cocaine and more than one pound of heroin along with cash and firearms. — City News Service, Daily News, 7 July 2026

Derived from a Central African shrub, the drug's ability to reduce withdrawal symptoms and cravings were uncovered by accident, when Howard Lotsof, a 19-year old addicted to heroin, tried ibogaine out of curiosity in 1962. — Gavin Escott, USA Today, 6 July 2026

Both were federally charged with conspiracy to possess with intent to distribute heroin and fentanyl. — Robert McGreevy, FOXNews.com, 3 July 2026

Best known for playing Ziggy Sobotka on season 2 of The Wire, Ransone often spoke publicly about his past struggles with addiction to painkillers and heroin. — Wesley Stenzel, Entertainment Weekly, 2 July 2026

Word History

Etymology

from Heroin, a trademark

First Known Use

1898, in the meaning defined above

Rhymes for heroin

• heroine

Kids 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