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

called also meth, methedrine, speed

compare crystal meth

Examples of methamphetamine in a Sentence

Recent Examples on the Web

Synthetic bath salts, also known as Alpha-PVP or cathinone, are believed to be similar to methamphetamine, cocaine or ecstasy, and are unrelated to actual bath products. —Landon Mion, Fox News, 4 Jan. 2025

The drug is said to be similar to methamphetamine, cocaine or ecstasy, and is unrelated to actual bath products. —CBS News, 3 Jan. 2025

Smugglers found some inventive ways to (unsuccessfully) conceal methamphetamine. —Cnn, The Mercury News, 30 Dec. 2024

Wright’s resignation comes roughly a year after the agency came under the eye of Bay Area News Group, which launched an investigation into the agency following the death of Phoenix Castro, a 3-month-old infant who died from ingesting a lethal dose of fentanyl and methamphetamine in San Jose. —Ruben Vives, Los Angeles Times, 27 Dec. 2024

Word History

First Known Use

1949, in the meaning defined above

Phrases Containing methamphetamine

• crystal methamphetamine

Kids 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