LSD

1

abbreviationPharmacology.
  1. a 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

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

Words Nearby LSD

Other definitions for LSD (2 of 4)

LSD2

abbreviation; noun,plural LSDsU.S. Navy.
  1. 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)

Other definitions for LSD (3 of 4)

LSD3

Other definitions for L.S.D. (4 of 4)

L.S.D.

abbreviation
  1. pounds, shillings, and pence.

Origin of L.S.D.

4
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. 2024

How to use LSD in a sentence

British Dictionary definitions for LSD (1 of 2)

LSD

noun
  1. 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)

L.S.D.

abbreviation for(in Britain, esp formerly)
  1. librae, solidi, denarii

Origin of L.S.D.

2
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

Scientific definitions for LSD

LSD

[ ĕl′ĕs-dē ]


  1. 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.