LSD

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noun \ˌel-(ˌ)es-ˈdē\

Definition of LSD

  1. :  a semisynthetic illicit organic compound C20H25N3O derived from ergot that induces extreme sensory distortions, altered perceptions of reality, and intense emotional states, that may also produce delusions or paranoia, and that may sometimes cause panic reactions in response to the effects experienced —called also lysergic acid diethylamide

Origin and Etymology of lsd

German Lysergsäure-Diäthylamid lysergic acid diethylamide


First Known Use: 1950


LSD Defined for English Language Learners

LSD

play
noun \ˌel-(ˌ)es-ˈdē\

Definition of LSD for English Language Learners

  • : an illegal drug that causes people to see and hear things that do not really exist


Medical Dictionary

LSD

play
noun \ˌel-ˌes-ˈdē\

Medical Definition of LSD

  1. :  a semisynthetic illicit organic compound C20H25N3O derived from ergot that induces extreme sensory distortions, altered perceptions of reality, and intense emotional states, that may also produce delusions or paranoia, and that may sometimes cause panic reactions in response to the effects experienced—called also acid, lysergic acid diethylamide, lysergide


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