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
The sting resulted in the seizure of more than 100 cellphones, methamphetamines, synthetic cannabinoids, and other narcotics, officials said.
—Doug Myers, CBS News, 2 Apr. 2026
Two people were arrested after around 100 pounds of crystal methamphetamine were found during a traffic stop, according to a news release from the Jeffersontown Police Department.
—Caroline Neal, Louisville Courier Journal, 1 Apr. 2026
Most recently, on March 22, one of the family's dogs again became ill after eating an unknown substance in the front yard, and tested positive for both methamphetamine and MDMA, or ecstasy.
—Jeanine Santucci, USA Today, 31 Mar. 2026
Police in Broomfield, Colorado, opened an investigation after multiple hot dogs laced with methamphetamine were found in a family’s yard and sickened at least two dogs, according to a press release.
—Hollie Silverman, MSNBC Newsweek, 30 Mar. 2026
See All Example Sentences for methamphetamine
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Doug Myers, CBS News, 2 Apr. 2026
Two people were arrested after around 100 pounds of crystal methamphetamine were found during a traffic stop, according to a news release from the Jeffersontown Police Department.
—Caroline Neal, Louisville Courier Journal, 1 Apr. 2026
Most recently, on March 22, one of the family's dogs again became ill after eating an unknown substance in the front yard, and tested positive for both methamphetamine and MDMA, or ecstasy.
—Jeanine Santucci, USA Today, 31 Mar. 2026
Police in Broomfield, Colorado, opened an investigation after multiple hot dogs laced with methamphetamine were found in a family’s yard and sickened at least two dogs, according to a press release.
—Hollie Silverman, MSNBC Newsweek, 30 Mar. 2026
See All Example Sentences for methamphetamine
Cite this Entry
“Methamphetamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methamphetamine. Accessed 5 Apr. 2026.
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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