LSD

\ ˌel-(ˌ)es-ˈdē

How to pronounce LSD (audio)

\

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

Keep scrolling for more

Learn More about LSD

Dictionary Entries near LSD

Statistics for LSD

Cite this Entry

“LSD.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/LSD. Accessed 27 January 2020.

Keep scrolling for more

More Definitions for LSD

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

\ ˌel-ˌes-ˈdē

\

Kids Definition of LSD

: a dangerous drug that causes hallucinations

LSD

\ 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

Keep scrolling for more

WORD OF THE DAY

parvenu

one that suddenly gains wealth or power

Test Your Vocabulary

Intact Latin Quiz

What did focus mean in Latin?

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.