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 The methamphetamine recovered from the vehicle and home totaled 60.9 grams, police said. Erik S. Hanley, Milwaukee Journal Sentinel, 8 June 2021 Juan Manuel Alvarez-Inzunza, 39, is accused of helping the cartel move hundreds of millions of dollars a year in profits from cocaine and methamphetamine out of the U.S. and into Mexico. Michael Ruiz, Fox News, 5 June 2021 Whiteman Runs Him, a member of the Crow tribe, said there are typically only two to four officers to patrol the 2.5 million acre reservation, which has been hit hard by the methamphetamine epidemic. Brooke Newman, The Arizona Republic, 3 June 2021 Cooley also had two semiautomatic rifles and a handgun in the pickup, as well as methamphetamine., 1 June 2021 The case, United States v. Cooley, involved a 2016 incident on the Crow Reservation in Montana where the defendant, Joshua James Cooley, was arrested after a Crow Police Department officer searched his vehicle and found weapons and methamphetamine. Madeleine Carlisle, Time, 1 June 2021 Stangel was also charged with second-degree methamphetamine possession last week. Jana Hollingsworth, Star Tribune, 1 June 2021 Inside the cab, police also saw in plain view several pieces of drug paraphernalia, where a substance identified as methamphetamine was found, along with a pipe, syringes, a measuring spoon and a bong. Thomas Jewell, cleveland, 27 May 2021 Investigators recovered methamphetamine and $14,261 in cash during the traffic stop. Lawrence Andrea, The Indianapolis Star, 26 May 2021

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.

See More

First Known Use of methamphetamine

1949, in the meaning defined above

Keep scrolling for more

Learn More About methamphetamine

Time Traveler for methamphetamine

Time Traveler

The first known use of methamphetamine was in 1949

See more words from the same year

Statistics for methamphetamine

Last Updated

15 Jun 2021

Cite this Entry

“Methamphetamine.” Dictionary, Merriam-Webster, Accessed 19 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for methamphetamine


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


Test Your Vocabulary

Return of Name that Color!

  • a light greenish blue color
  • Name that color:
Name That Thing

Test your visual vocabulary with our 10-question challenge!

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

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