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[huh-loo-suh-nuh-juh n] /həˈlu sə nə dʒən/
a substance that produces hallucinations.
Origin of hallucinogen
1950-55; hallucin(ation) + -o- + -gen Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for hallucinogen
  • hallucinogen addiction is a drug which stimulates from plants and used for hallucination by people.
  • Not his fault that he grabbed the wrong pill bottle and ingested a hallucinogen instead.
  • Examines patterns of hallucinogen use among teens and adults.
British Dictionary definitions for hallucinogen


any drug, such as LSD or mescaline, that induces hallucinations
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 hallucinogen

"drug which induces hallucinations," 1954, from stem of hallucination + -gen.

Online Etymology Dictionary, © 2010 Douglas Harper
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hallucinogen in Medicine

hallucinogen hal·lu·ci·no·gen (hə-lōō'sə-nə-jən)
A substance that induces hallucination.

hal·lu'cin·o·gen'ic (-jěn'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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hallucinogen in Science
A drug or chemical that causes a person to have hallucinations. Mescaline, LSD, and psilocybin are hallucinogens.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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hallucinogen in Culture
hallucinogen [(huh-looh-suh-nuh-juhn)]

A substance or drug that can cause hallucinations.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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