psychoactive substance

   Also known as drug. The term psychoactive substance comes from the Greek noun psuchè (life breath, spirit, soul, mind) and the Latin adjective activus (active). It is used as a generic term for substances which, in a sufficiently high dose, have the potential to alter the user's state ofconscious-ness. A person intentionally employing psychoac-tive substances for the purpose of exploring the psyche may be called a * psychonaut.
   Rudgley, R. (1998). The encyclopaedia of psy-choactive substances. London: Little, Brown and Company.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • psychoactive substance — noun a drug that can produce mood changes and distorted perceptions • Syn: ↑psychoactive drug, ↑mind altering drug, ↑consciousness altering drug • Hypernyms: ↑drug • Hyponyms: ↑designer drug …   Useful english dictionary

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  • Psychoactive drug — An assortment of psychoactive drugs A psychoactive drug, psychopharmaceutical, or psychotropic is a chemical substance that crosses the blood–brain barrier and acts primarily upon the central nervous system where it affects brain function,… …   Wikipedia

  • Substance Abuse —    Before the middle of the nineteenth century, the main substance capable of being abused was alcohol. With the rise of such anesthetic gases as ether (first used medically in 1846), of injectable opiate narcotics (after the introduction of the… …   Historical dictionary of Psychiatry

  • substance use disorders — [DSM IV] a subgroup of the substance related disorders (q.v.) in which psychoactive substance use or abuse repeatedly results in significantly adverse consequences. The group comprises substance abuse and substance dependence; specific disorders… …   Medical dictionary

  • substance intoxication — [DSM IV] a type of substance induced disorder comprising reversible, substance specific, maladaptive behavioral or psychological changes directly resulting from the physiologic effects on the central nervous system of recent ingestion of or… …   Medical dictionary

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