methamphetamine

noun

meth·​am·​phet·​amine ˌme-tham-ˈfe-tə-ˌmēn How to pronounce methamphetamine (audio)
-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

called also meth, methedrine, speed

compare crystal meth

Examples of methamphetamine in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
One of them, the Sinaloa cartel, is considered among the biggest criminal forces in the hemisphere, primarily trafficking fentanyl, methamphetamine, cocaine, and other narcotics internationally. Whitney Eulich, The Christian Science Monitor, 19 Feb. 2025 The dogs indicated that drugs were present in the pallets, and police found one of pavers, which was shaped like a hexagon, contained a circular container hidden inside that contained 800 grams of methamphetamine. Julia Gomez, USA TODAY, 17 Feb. 2025 Prosecutors said investigators learned Kevin Parker and his associates sold fentanyl powder, fentanyl pills and more than 15 pounds of methamphetamine. Rosalio Ahumada, Sacramento Bee, 7 Feb. 2025 There has not been significant research into the link between methamphetamine usage and arson. Michael Gfoeller and David H. Rundell, Newsweek, 15 Jan. 2025 See All Example Sentences for methamphetamine

Word History

First Known Use

1949, in the meaning defined above

Time Traveler
The first known use of methamphetamine was in 1949

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Cite this Entry

“Methamphetamine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methamphetamine. Accessed 2 Mar. 2025.

Kids Definition

methamphetamine

noun
meth·​am·​phet·​amine ˌmeth-am-ˈfet-ə-ˌmēn How to pronounce methamphetamine (audio)
: 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 How to pronounce methamphetamine (audio)
: 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

More from Merriam-Webster on methamphetamine

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