meth·​am·​phet·​amine | \ ˌme-tham-ˈfe-tə-ˌmēn How to pronounce methamphetamine (audio) , -thəm-, -mən\

Definition of methamphetamine

: 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 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

Rodraikus Grays, 20, was charged with drug trafficking, attempting to traffic cocaine, distribution of methamphetamines, possession of marijuana and first-degree robbery. Howard Koplowitz |,, "4 arrested in Jefferson County on drug trafficking charges," 12 July 2019 The bust yielded 45 pounds of methamphetamine, 15.5 kilos of cocaine and $710,000 cash. Nick Ferraro, Twin Cities, "West St. Paul shooting leaves 21-year-old man dead, family members say," 10 July 2019 He was accused of pulling a gun on his mother in March 2018, according to an arrest report for methamphetamine possession. Chris Mayhew,, "What we know: Shots fired at police in Erlanger by car's passenger, the driver was hospitalized," 10 June 2019 Chiodo said the early belief is the drug the men apparently consumed could have been cut with fentanyl, a synthetic opioid that people have been adding to heroin, cocaine, methamphetamine and marijuana. Mara H. Gottfried, Twin Cities, "South St. Paul drug overdose scene was ‘overwhelming’," 3 June 2019 Shortly after Full House ended in 1995, the young actress turned to alcohol, ecstasy, cocaine, and methamphetamine. Amanda Garrity, Good Housekeeping, "'Fuller House' Star Jodie Sweetin Shuts Down Instagram Follower Who Mocked Her Sobriety," 4 Mar. 2019 Medical staff failed to follow proper restraint and emergency procedures when dealing with the disturbed man who was high on methamphetamine, regulators said. Dan Frosch, WSJ, "Regulators Threaten Funding of Indian Health Hospital in South Dakota," 17 Aug. 2018 But deaths from methamphetamine, cocaine and fentanyl continue to rise. Carina Julig, The Denver Post, "Colorado overdose deaths fall for first time since 2012," 10 June 2019 Police found Julick at a Richwood gas station with a needle used for methamphetamine on him, according to the report. Chris Mayhew,, "Records: Erlanger shooting suspect Jacob Ray Julick pulled gun on his own mother last year," 6 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'methamphetamine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of methamphetamine

1949, in the meaning defined above

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Last Updated

17 Jul 2019

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The first known use of methamphetamine was in 1949

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meth·​am·​phet·​amine | \ ˌmeth-am-ˈfet-ə-ˌmēn, ˌmeth-əm-, -mən How to pronounce methamphetamine (audio) \

Medical Definition of methamphetamine

: an amine C10H15N that is used medically in the form of its crystalline hydrochloride C10H15N·HCl especially to treat attention deficit disorder and obesity and that is often abused illicitly as a stimulant

called also meth, methedrine, methylamphetamine, speed

More from Merriam-Webster on methamphetamine Encyclopedia article about methamphetamine

Comments on methamphetamine

What made you want to look up methamphetamine? Please tell us where you read or heard it (including the quote, if possible).


appealing forcibly to the mind or reason

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