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[am-fet-uh-meen, -min] /æmˈfɛt əˌmin, -mɪn/
noun, Pharmacology
a racemic drug, C 9 H 13 N, that stimulates the central nervous system: used chiefly to lift the mood in depressive states and to control the appetite in cases of obesity.
1935-40; a(lpha) + m(ethyl) + ph(enyl) + et(hyl) + amine Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for amphetamines
  • Smoking causes you to lose weight, as do amphetamines.
  • Creative thinkers tend to smoke marijuana, honors students prefer amphetamines.
  • There's an intriguing historical precedent at the origins of amphetamines.
  • Finally, there have been no studies made on the long-range effects of the administration of amphetamines to children.
  • However, for the moment, the evidence suggests that neither marijuana nor amphetamines are physiologically addictive.
  • World production of amphetamines and similar stimulants appears to be steady.
  • It is surprising to see cocaine be the highest ranked in usage and possession but rank lower than amphetamines.
  • Start with the possession and sale of cannabis and amphetamines, and experiment with different strategies.
  • Even amphetamines and steroids can only do so much with the meat.
  • There was no sign of alcohol, cocaine, amphetamines or other drugs in her blood.
British Dictionary definitions for amphetamines


/æmˈfɛtəˌmiːn; -mɪn/
a synthetic colourless volatile liquid used medicinally as the white crystalline sulphate, mainly for its stimulant action on the central nervous system, although it also stimulates the sympathetic nervous system. It can have unpleasant or dangerous side effects and drug dependence can occur; 1-phenyl-2-aminopropane. Formula: C6H5CH2CH(NH2)CH3
Word Origin
C20: from a(lpha) + m(ethyl) + ph(enyl) + et(hyl) + -amine
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
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Word Origin and History for amphetamines



1938, contracted from alphamethyl-phenethylamine.

Online Etymology Dictionary, © 2010 Douglas Harper
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amphetamines in Medicine

amphetamine am·phet·a·mine (ām-fět'ə-mēn', -mĭn)

  1. A colorless, volatile liquid used primarily as a central nervous system stimulant.

  2. A derivative of amphetamine, such as dextroamphetamine or a phosphate or sulfate of amphetamine, used as a central nervous system stimulant in the treatment of certain conditions, such as narcolepsy and depression.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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amphetamines in Science
Any of a group of drugs that stimulate the central nervous system, resulting in elevated blood pressure, heart rate, and other metabolic functions. Amphetamines are used in the treatment of certain neurological conditions, such as attention deficit hyperactivity disorder and narcolepsy. The drugs are highly addictive and are sometimes abused.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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amphetamines in Culture

amphetamine definition

A drug that stimulates the central nervous system and is used to treat certain conditions, such as attention deficit disorder, depression, and narcolepsy.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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