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psilocybin

[sil-uh-sahy-bin, sahy-luh-] /ˌsɪl əˈsaɪ bɪn, ˌsaɪ lə-/
noun, Pharmacology
1.
a hallucinogenic crystalline solid, C 1 2 H 1 7 N 2 O 4 P, obtained from the mushroom Psilocybe mexicana.
Origin
1955-1960
1955-60; < Neo-Latin Psilocyb(e) genus of mushrooms (< Greek psīló(s) bare + kýbē head) + -in2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for psilocybin
  • Ketamine and psilocybin are the city's current psychedelics of choice.
  • Finally, a controlled scientific experiment about the psychological and spiritual effects of psilocybin.
  • But after completing the pilot study, he abandoned the drug in favor of the less controversial psilocybin.
  • Although there is no evidence that psilocybin is addictive, its adverse effects are well known.
British Dictionary definitions for psilocybin

psilocybin

/ˌsɪləˈsaɪbɪn; ˌsaɪlə-/
noun
1.
a crystalline phosphate ester that is the active principle of the hallucinogenic fungus Psilocybe mexicana. Formula: C12H17N2O4P
Word Origin
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
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Word Origin and History for psilocybin
n.

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
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psilocybin in Medicine

psilocybin psil·o·cy·bin (sĭl'ə-sī'bĭn, sī'lə-)
n.
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.
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psilocybin in Science
psilocybin
  (sĭl'ə-sī'bĭn, sī'lə-)   
A hallucinogenic compound obtained from certain mushrooms, especially of the genus Psilocybe. Chemical formula: C12H17N2O4P.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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