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LSD
noun
: 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
Examples of LSD in a Sentence
Recent Examples on the Web
Since the 1960s and ’70s, when mushrooms and LSD were considered inseparable from the anti-war movement and hippie culture, psychedelic drugs have been culturally associated with the American left.
—Shayla Love, The Atlantic, 1 Nov. 2024
Related article Unforgettable photos of psychedelia and debauchery from the golden age of LSD
In small clinical trials, synthetic versions of the psychedelic have shown benefits in tackling cluster headaches, anxiety, anorexia, obsessive-compulsive disorder and various forms of substance abuse.
—Sandee Lamotte, CNN, 22 Oct. 2024
In 2022, scientists made a trip-free analogue of LSD to research as an antidepressant.
—Shayla Love, The Atlantic, 20 Oct. 2024
The system also features vehicle stability control (VSC) and an automatic limited-slip differential (Auto LSD).
—James Raia, The Mercury News, 13 Oct. 2024
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Word History
Etymology
borrowed from German, from Lysergsäure-Diäthylamid "lysergic acid diethylamide"
First Known Use
1950, in the meaning defined above
Dictionary Entries Near LSD
Cite this Entry
“LSD.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/LSD. Accessed 21 Nov. 2024.
Kids Definition
LSD
noun
: an illegal drug that causes abnormal sensations, extreme and changeable states of emotion, unnatural changes in the way time and space are experienced, and hallucinations and that may sometimes cause panic in response to the effects experienced
Medical Definition
LSD
noun
: 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
More from Merriam-Webster on LSD
Britannica.com: Encyclopedia article about LSD
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