LSD

¹

abbreviation for

, 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 for

, 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 for

1. least significant digit ( def ).

L.S.D.

⁴

or £.s.d., l.s.d.

abbreviation for

1. pounds, shillings, and pence.

LSD

¹

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

L.S.D.

²

abbreviation for

1. librae, solidi, denarii

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: 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.

Word History and Origins

Origin of LSD¹

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

Origin of LSD²

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

Origin of LSD³

From Latin lībrae “pounds (sterling),” libra ¹( def ), pound ²( def ); solidī , solidus ¹( def ); dēnāriī denarius ( def )

Word History and Origins

Origin of LSD¹

Latin: pounds, shillings, pence

Example Sentences

The zoologist at University of Tubingen in Germany gave a bunch of spiders some LSD.

From The Daily Beast

And there it was before my eyes—a real trip in those brain-buzzing LSD colors.

From The Daily Beast

At the time they made LSD illegal in 1970—and by extension other psychedelics—MDMA was not included.

From The Daily Beast

LSD, an illicit drug with a serious stigma, was once the darling of the psychotherapy world.

From The Daily Beast

But with LSD, because it was countercultural, and because it was used as an experimental drug, it was not marketed properly.

From The Daily Beast

It is common to have a bad psychological reaction to LSD, mescaline, and psilocybin.

From Project Gutenberg

Lysergic acid (LSD), mescaline, and psilocybin cause illusions and hallucinations.

From Project Gutenberg