psilocybin
noun
psi·lo·cy·bin
ˌsī-lə-ˈsī-bən 
: a hallucinogenic indole C12H17N2O4P obtained from a fungus (such as Psilocybe mexicana or P. cubensis synonym Stropharia cubensis)
Examples of psilocybin in a Sentence
Recent Examples on the Web
According to the prosecutor, no alcohol, THC, or psilocybin was found in Shirilla’s system.
—
Jake King-Schreifels, Time, 15 May 2026
The results suggest a broad surge in support for loosening restrictions on research into substances such as psilocybin and MDMA to probe their potential for medical use.
—Jackie Flynn Mogensen, Scientific American, 13 May 2026
If done right, this sharpened regulatory focus on psychedelics could shift the field away from claims of quick cures toward a more nuanced understanding of what psilocybin, MDMA and other therapies can — and, as importantly, cannot — offer people in need.
—Lisa Jarvis, Twin Cities, 13 May 2026
Steadman was feeling seasick, so Thompson gave him a pill that turned out to be psilocybin, the psychedelic drug.
—Steve Appleford, SPIN, 11 May 2026
See All Example Sentences for psilocybin
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Jake King-Schreifels, Time, 15 May 2026
The results suggest a broad surge in support for loosening restrictions on research into substances such as psilocybin and MDMA to probe their potential for medical use.
—Jackie Flynn Mogensen, Scientific American, 13 May 2026
If done right, this sharpened regulatory focus on psychedelics could shift the field away from claims of quick cures toward a more nuanced understanding of what psilocybin, MDMA and other therapies can — and, as importantly, cannot — offer people in need.
—Lisa Jarvis, Twin Cities, 13 May 2026
Steadman was feeling seasick, so Thompson gave him a pill that turned out to be psilocybin, the psychedelic drug.
—Steve Appleford, SPIN, 11 May 2026
See All Example Sentences for psilocybin
Cite this Entry
“Psilocybin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/psilocybin. Accessed 20 May. 2026.
Copy CitationKids Definition
psilocybin
noun
psi·lo·cy·bin
ˌsī-lə-ˈsī-bən
: a chemical that is obtained from a fungus and causes hallucinations
Medical Definition
psilocybin
noun
psi·lo·cy·bin
ˌsī-lə-ˈsī-bən
: a hallucinogenic indole C12H17N2O4P obtained from a basidiomycetous fungus (as Psilocybe mexicana or P. cubensis synonym Stropharia cubensis)
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