LSD
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abbreviation Pharmacology.
a crystalline solid, C20H25N3O, the diethyl amide of lysergic acid, a powerful psychedelic drug that produces temporary hallucinations and a schizophrenic psychotic state.
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Origin of LSD
1First recorded in 1945–50; abbreviaion of German Lysergsäure-Diäthylamid “lysergic acid diethylamide”
Other definitions for LSD (2 of 4)
LSD2
abbreviation; noun, plural LSDsU.S. Navy.
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
2First recorded in 1940–45; abbreviation of l(anding), s(hip), d(ock)
Other definitions for LSD (3 of 4)
Other definitions for LSD (4 of 4)
L.S.D.
or £.s.d., l.s.d.
abbreviation
pounds, shillings, and pence.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use LSD in a sentence
British Dictionary definitions for LSD (1 of 2)
LSD
noun
lysergic acid diethylamide; a crystalline compound prepared from lysergic acid, used in experimental medicine and taken illegally as a hallucinogenic drugInformal name (as an illegal hallucinogen): acid
British Dictionary definitions for LSD (2 of 2)
L.S.D.
.s.d. or l.s.d.
abbreviation for (in Britain, esp formerly)
librae, solidi, denarii
Word Origin for L.S.D.
Latin: pounds, shillings, pence
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Scientific definitions for LSD
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
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.