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
When his oldest son turned 12, Vance admitted to giving his son psilocybin to sell to friends.
—
Cara Lynn Shultz,
PEOPLE,
29 June 2026
While executing a search warrant in October 2024, law enforcement officers found 257 pounds of mushrooms and 18 pounds of growing material at a location in Fallbrook, as well as 25 pounds of mushrooms, 5 pounds of psilocybin capsules and six firearms at a location in Bonsall.
—
Noah Haggerty,
Los Angeles Times,
28 June 2026
In August 2023, Shirilla was convicted of murder, felonious assault, aggravated vehicular homicide, drug possession, and criminal tools possession (psilocybin mushrooms and a scale were found at the crime scene).
—
Bethy Squires,
Vulture,
24 June 2026
Tobacco plants were engineered to produce bufotenine, DMT, psilocin, psilocybin, and 5-MeO-DMT.
—
Ann Manov,
Harpers Magazine,
23 June 2026
See All Example Sentences for psilocybin
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Cara Lynn Shultz,
PEOPLE,
29 June 2026
While executing a search warrant in October 2024, law enforcement officers found 257 pounds of mushrooms and 18 pounds of growing material at a location in Fallbrook, as well as 25 pounds of mushrooms, 5 pounds of psilocybin capsules and six firearms at a location in Bonsall.
—
Noah Haggerty,
Los Angeles Times,
28 June 2026
In August 2023, Shirilla was convicted of murder, felonious assault, aggravated vehicular homicide, drug possession, and criminal tools possession (psilocybin mushrooms and a scale were found at the crime scene).
—
Bethy Squires,
Vulture,
24 June 2026
Tobacco plants were engineered to produce bufotenine, DMT, psilocin, psilocybin, and 5-MeO-DMT.
—
Ann Manov,
Harpers Magazine,
23 June 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 6 Jul. 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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