The N′,N′ -dimethyl derivative of 4-hydroxytryptamine; obtained from the fruiting bodies of the fungus Psilocybe mexicana and other species of Psilocybe and Stropharia. P. is a congener of 5-hydroxytryptamine, with striking central nervous system effects, and is readily hydrolyzed to 4-hydroxybufotenine; used as a hallucinogenic agent (and by Mexican aborigines to induce trances). SYN: indocybin.

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psi·lo·cy·bin .sī-lə-'sī-bən n a hallucinogenic indole C12H17N2O4P obtained from a basidiomycetous fungus (as Psilocybe mexicana or P. cubensis syn. Stropharia cubensis)

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psi·lo·cy·bin (si″lo-siґbin) a hallucinogenic crystalline compound with indole characteristics, isolated from mushrooms of the genus Psilocybe, especially P. mexicana Heim.

Medical dictionary. 2011.

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  • psilocybin — 1958, from Mod.L. psilocybe, name of a Central Amer. species of mushroom, from Gk. psilos bare (akin to psen to rub ) + kybe head …   Etymology dictionary

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  • psilocybin — noun Etymology: New Latin Psilocybe, fungus genus + 1 in Date: 1958 a hallucinogenic indole C12H17N2O4P obtained from a fungus (as Psilocybe mexicana or P. cubensis syn. Stropharia cubensis) …   New Collegiate Dictionary

  • psilocybin — /sil euh suy bin, suy leuh /, n. Pharm. a hallucinogenic crystalline solid, C12H17N2O4P, obtained from the mushroom Psilocybe mexicana. [1955 60; < NL Psilocyb(e) genus of mushrooms ( < Gk psiló(s) bare + kýbe head) + IN2] * * * …   Universalium

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