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View synonyms for

LSD

1

abbreviation

Pharmacology.

  1. a crystalline solid, C 20 H 25 N 3 O, the diethyl amide of lysergic acid, a powerful psychedelic drug that produces temporary hallucinations and a schizophrenic psychotic state.

LSD

2

abbreviation

U.S. Navy.

plural

LSDs 

  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.

LSD

3

abbreviation

  1. least significant digit.

L.S.D.

4
Or £...,

abbreviation

  1. pounds, shillings, and pence.

L.S.D.

1

abbreviation

  1. librae, solidi, denarii

“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

LSD

2

noun

  1. Informal name (as an illegal hallucinogen): acid.lysergic acid diethylamide; a crystalline compound prepared from lysergic acid, used in experimental medicine and taken illegally as a hallucinogenic drug

“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

LSD

  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: C 20 H 25 N 3 O.

LSD

  1. 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.

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Word History and Origins

Origin of LSD1

First recorded in 1945–50; abbreviaion of German äܰ-پäٳ “lysergic acid diethylamide”

Origin of LSD2

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

Origin of LSD3

From Latin ī “pounds (sterling),” libra 1 ( def. ), pound 2 ( def. ); solidī , solidus 1 ( def. ); ŧī denarius ( def. )
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Word History and Origins

Origin of LSD1

Latin: pounds, shillings, pence

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