- a hallucinogenic crystalline solid, C12H17N2O4P, obtained from the mushroom Psilocybe mexicana.
Origin of psilocybin
1955–60; < New Latin Psilocyb(e) genus of mushrooms (< Greek psīló(s) bare + kýbē head) + -in2
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Examples from the Web for psilocybin
It lasts several hours longer than either MDMA or psilocybin, and it has the greatest risk profile of any psychedelic.Is LSD Good for You?
August 19, 2009
It is common to have a bad psychological reaction to LSD, mescaline, and psilocybin.
Lysergic acid (LSD), mescaline, and psilocybin cause illusions and hallucinations.
- a crystalline phosphate ester that is the active principle of the hallucinogenic fungus Psilocybe mexicana. Formula: C 12 H 17 N 2 O 4 P
C20: from New Latin Psilocybe (from Greek psilos bare + kubē head) + -in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for psilocybin
1958, from Modern Latin psilocybe, name of a Central American species of mushroom, from Greek psilos "bare" (see psilo-) + kybe "head."
Online Etymology Dictionary, © 2010 Douglas Harper
- A hallucinogenic compound obtained from the mushroom Psilocybe mexicana.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A hallucinogenic compound obtained from certain mushrooms, especially of the genus Psilocybe. Chemical formula: C12H17N2O4P.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.