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methamphetamine

American  
[meth-am-fet-uh-meen, -min] / ˌmɛθ æmˈfɛt əˌmin, -mɪn /

noun

Pharmacology.
  1. a central nervous system stimulant, C 1 0 H 1 5 N, used clinically in the treatment of narcolepsy, hyperkinesia, and for blood pressure maintenance in hypotensive states: also widely used as an illicit drug.


methamphetamine British  
/ ˌmɛθæmˈfɛtəmɪn /

noun

  1. a variety of amphetamine used for its stimulant action

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

methamphetamine Scientific  
/ mĕth′ăm-fĕtə-mēn′,-mĭn /
  1. An amine derivative of amphetamine, C 10 H 15 N, used in the form of its crystalline hydrochloride both as a central nervous system stimulant in the medical treatment of obesity and attention deficit hyperactivity disorder and illicitly as a recreational drug.


Etymology

Origin of methamphetamine

First recorded in 1945–50; meth- + amphetamine

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