Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A colorless, volatile liquid, C9H13N, used as a central nervous system stimulant in the treatment of certain conditions, such as attention deficit hyperactivity disorder, depression, and narcolepsy, and abused illegally as a stimulant.
  • n. A derivative of amphetamine, such as dextroamphetamine or a phosphate or sulfate of amphetamine.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 1-phenyl-2-propylamine; a colourless volatile liquid; any of its derivatives.
  • n. A class of drugs used as a stimulant of the central nervous system in the treatment of ADHD, depression, and narcolepsy, and abused illegally as a stimulant.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

Etymologies

a(lpha) + m(ethyl) + ph(enyl) + et(hyl) + amine.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Shortened form of alpha-methylphenethylamine. (Wiktionary)

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