psycho active


of or pertaining to a substance having a profound or significant effect on mental processes: a psychoactive drug.

1960–65; psycho- + active Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
psychoactive (ˌsaɪkəʊˈæktɪv)
capable of affecting mental activity: a psychoactive drug

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

psychoactive psy·cho·ac·tive (sī'kō-āk'tĭv)
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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