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LSD

1
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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

1
First recorded in 1945–50; abbreviaion of German Lysergsäure-Diäthylamid “lysergic acid diethylamide”

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Definition 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

2
First recorded in 1940–45; abbreviation of l(anding), s(hip), d(ock)

Definition for LSD (3 of 4)

LSD3

abbreviation

Definition for LSD (4 of 4)

L.S.D.

or £.s.d., l.s.d.


abbreviation

pounds, shillings, and pence.

Origin of L.S.D.

From Latin lībrae “pounds (sterling),” see libra1, pound2; solidī , see solidus1; dēnāriī see denarius
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for LSD

LSD
[ ĕl′ĕs-dē ]

n.

Lysergic acid diethylamide; a crystalline compound derived from lysergic acid and used as a powerful hallucinogenic drug.acid lysergide
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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.
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