- heightening perceptions in a hallucinatory way: mind-expanding drugs.
Origin of mind-expanding
First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (of a drug such as LSD) causing a sensation of heightened consciousness; psychedelic
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
- Producing intensified or distorted perceptions; psychedelic.
- Producing an increased perceptive awareness.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.