LSD
1a crystalline solid, C20H25N3O, the diethyl amide of lysergic acid, a powerful psychedelic drug that produces temporary hallucinations and a schizophrenic psychotic state.
Origin of LSD
1Words Nearby LSD
Other definitions for LSD (2 of 4)
a seagoing, amphibious ship capable of carrying and launching assault landing craft from a large, inner compartment that can be flooded, and of making emergency repairs at sea to smaller ships.
Origin of LSD
2Other definitions for LSD (3 of 4)
Other definitions for L.S.D. (4 of 4)
pounds, shillings, and pence.
Origin of L.S.D.
4Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use LSD in a sentence
The zoologist at University of Tubingen in Germany gave a bunch of spiders some LSD.
Zebra Finches, Dolphins, Elephants, and More Animals Under the Influence | Bill Schulz | December 31, 2014 | THE DAILY BEASTAnd there it was before my eyes—a real trip in those brain-buzzing LSD colors.
At the time they made LSD illegal in 1970—and by extension other psychedelics—MDMA was not included.
LSD, an illicit drug with a serious stigma, was once the darling of the psychotherapy world.
But with LSD, because it was countercultural, and because it was used as an experimental drug, it was not marketed properly.
Frances McDormand on 'Olive Kitteridge,' Dropping LSD, and Her Beef With FX's 'Fargo' | Marlow Stern | September 3, 2014 | THE DAILY BEAST
It is common to have a bad psychological reaction to LSD, mescaline, and psilocybin.
What Works: Schools Without Drugs | United States Department of EducationLysergic acid (LSD), mescaline, and psilocybin cause illusions and hallucinations.
What Works: Schools Without Drugs | United States Department of Education
British Dictionary definitions for LSD (1 of 2)
lysergic acid diethylamide; a crystalline compound prepared from lysergic acid, used in experimental medicine and taken illegally as a hallucinogenic drug: Informal name (as an illegal hallucinogen): acid
British Dictionary definitions for L.S.D. (2 of 2)
librae, solidi, denarii
Origin of L.S.D.
2Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for LSD
[ ĕl′ĕs-dē′ ]
Short for lysergic acid diethylamide. A crystalline compound that is a synthetic derivative of lysergic acid. It is used as a powerful hallucinogenic drug. Chemical formula: C20H25N3O.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for LSD
A drug, lysergic acid diethylamide, that produces hallucinations similar to those of a psychosis. Persons on LSD “trips,” which may last for many hours, undergo distortions of their perceptions of space and time and may lose all contact with reality.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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