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psychoactive

[sahy-koh-ak-tiv] /ˌsaɪ koʊˈæk tɪv/
adjective
1.
of or relating to a substance having a profound or significant effect on mental processes:
a psychoactive drug.
Origin of psychoactive
1960-1965
First recorded in 1960-65; psycho- + active
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for psychoactive

psychoactive

/ˌsaɪkəʊˈæktɪv/
adjective
1.
capable of affecting mental activity: a psychoactive drug
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 psychoactive
adj.

also psycho-active, 1959, from psycho- + active.

Online Etymology Dictionary, © 2010 Douglas Harper
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psychoactive in Medicine

psychoactive psy·cho·ac·tive (sī'kō-āk'tĭv)
adj.
Affecting the mind or mental processes. Used of a drug.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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