Dictionary.com

psychoactive

[ sahy-koh-ak-tiv ]
/ ˌsaɪ koʊˈæk tɪv /
Save This Word!

adjective

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

QUIZZES

QUIZ YOURSELF ON “ITS” VS. “IT’S”!

Apostrophes can be tricky; prove you know the difference between it’s and its in this crafty quiz!
Question 1 of 12
On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of psychoactive

First recorded in 1960–65; psycho- + active
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for psychoactive

psychoactive
/ (ˌsaɪkəʊˈæktɪv) /

adjective

capable of affecting mental activitya 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

Medical definitions for psychoactive

psychoactive
[ sī′kō-ăktĭv ]

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.
What's This Word?