heroin

noun

her·​o·​in ˈher-ə-wən How to pronounce heroin (audio)
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 noun

Examples of heroin in a Sentence

Recent Examples on the Web Dabbling in cocaine, meth, and heroin were all part of the future country singer’s college days in Bowling Green, Kentucky. Jeff Gage, Rolling Stone, 23 Apr. 2024 The drug — 50 times more potent than heroin, according to the Drug Enforcement Administration — has ravaged across the country, killing more than 850 people in the Kansas City region since 2018. Kacen Bayless, Kansas City Star, 16 Apr. 2024 See all Example Sentences for heroin 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'heroin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

from Heroin, a trademark

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of heroin was in 1898

Dictionary Entries Near heroin

Cite this Entry

“Heroin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heroin. Accessed 3 May. 2024.

Kids Definition

heroin

noun
her·​o·​in ˈher-ə-wən How to pronounce heroin (audio)
: a strongly addictive drug made from the opium poppy and stronger than morphine

Medical Definition

heroin

noun
her·​o·​in ˈher-ə-wən How to pronounce heroin (audio)
: 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

More from Merriam-Webster on heroin

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!