LSD

noun

\ ˌel-(ˌ)es-ˈdē

How to pronounce LSD (audio)

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Definition of LSD

: 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

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Time Traveler for LSD

The first known use of LSD was in 1950

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LSD

noun

English Language Learners Definition of LSD

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

See the full definition for LSD in the English Language Learners Dictionary

LSD

noun

\ ˌel-ˌes-ˈdē

\

Kids Definition of LSD

: a dangerous drug that causes hallucinations

LSD

noun

\ ˌel-ˌes-ˈdē

\

Medical Definition of LSD

: 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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