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

Related Articles Colorado Springs voters will vote on recreational marijuana — again — as leaders order new ballot measure First psilocybin therapy center applications roll in as Colorado prepares for industry launch this spring Colorado Springs finally approved recreational marijuana. —Tiney Ricciardi, The Denver Post, 31 Jan. 2025

Studies from institutions like Johns Hopkins University and the Multidisciplinary Association for Psychedelic Studies (MAPS) have demonstrated that psychedelics such as psilocybin (magic mushrooms) and MDMA can play a significant role in treating mental health conditions. —Matt Rozo, The Mercury News, 7 Jan. 2025

While psilocybin remains heavily regulated compared to marijuana, it is decriminalized in Colorado, and licensed facilitators will oversee therapy sessions. —Dan Perry, Newsweek, 2 Jan. 2025

The decrease is attributed to the closure of the Oregon cannabis operations as the company focuses on opening its psilocybin treatment center. —Quartz Bot, Quartz, 22 Nov. 2024

Word History

Etymology

New Latin Psilocybe, fungus genus + -in entry 1

First Known Use

1958, in the meaning defined above

Kids 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)