Definitions

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

  • adj. Having an altering effect on perception, emotion, or behavior. Used especially of a drug.
  • n. A psychotropic drug or other agent.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Affecting the mind or mental processes.
  • n. A psychotropic drug or agent.

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

  • adj. affecting the mind or mood or other mental processes

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