methamphetamine
noun
meth·am·phet·amine
ˌme-tham-ˈfe-tə-ˌmēn 
-thəm-,
-mən
: a synthetic or semisynthetic compound C10H15N that stimulates the central nervous system, is used medically in the form of its crystalline hydrochloride C10H15N·HCl especially to treat attention deficit hyperactivity disorder and obesity, and that is often abused illicitly for its stimulant properties
… methamphetamine is a powerful addictive stimulant whose longtime consumers tend to suffer from paranoia, depression, hallucinations, and violent rages.—
William Finnegan
William Finnegancalled also meth, methedrine, speed
compare crystal methExamples of methamphetamine in a Sentence
Recent Examples on the Web
In the investigation, law enforcement seized 11 guns, and hundreds of pounds of drugs, including more than one kilo of methamphetamine, more than 200 pounds of the psychedelic drug DMT, more than five kilos of marijuana and 15 kilos of hashish and hashish oil.
—Kevin Grasha, The Enquirer, 2 July 2025
In recent months, joint operations resulted in the arrest of 43 traffickers and the seizure of more than 1,000 pounds of methamphetamine and 45 pounds of fentanyl from Colorado streets.
—Mark Michalek, Denver Post, 28 June 2025
Toxicology testing showed methamphetamine, amphetamine, fentanyl and methadone in Keys’ blood.
—Kristi Miller, Twin Cities, 16 June 2025
Mexican officials said that an undisclosed quantity of methamphetamine was seized at the scene.
—Alexandra Mendoza The San Diego Union-Tribune, Arkansas Online, 20 June 2025
See All Example Sentences for methamphetamine
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Kevin Grasha, The Enquirer, 2 July 2025
In recent months, joint operations resulted in the arrest of 43 traffickers and the seizure of more than 1,000 pounds of methamphetamine and 45 pounds of fentanyl from Colorado streets.
—Mark Michalek, Denver Post, 28 June 2025
Toxicology testing showed methamphetamine, amphetamine, fentanyl and methadone in Keys’ blood.
—Kristi Miller, Twin Cities, 16 June 2025
Mexican officials said that an undisclosed quantity of methamphetamine was seized at the scene.
—Alexandra Mendoza The San Diego Union-Tribune, Arkansas Online, 20 June 2025
See All Example Sentences for methamphetamine
Cite this Entry
“Methamphetamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methamphetamine. Accessed 18 Jul. 2025.
Copy CitationKids Definition
methamphetamine
noun
meth·am·phet·amine
ˌmeth-am-ˈfet-ə-ˌmēn
: a drug derived from amphetamine that is often used illegally as a stimulant of the central nervous system
Medical Definition
methamphetamine
noun
meth·am·phet·amine
ˌmeth-am-ˈfet-ə-ˌmēn, ˌmeth-əm-, -mən
: an amine C10H15N that is used medically in the form of its crystalline hydrochloride C10H15N·HCl especially to treat attention deficit hyperactivity disorder and obesity and that is often abused illicitly as a stimulant
called also meth, methedrine, methylamphetamine, speed
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