hallucinogen

[huh-loo-suh-nuh-juhn]
noun
a substance that produces hallucinations.

Origin:
1950–55; hallucin(ation) + -o- + -gen

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Collins
World English Dictionary
hallucinogen (həˈluːsɪnəˌdʒɛn)
 
n
any drug, such as LSD or mescaline, that induces hallucinations

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

hallucinogen hal·lu·ci·no·gen (hə-lōō'sə-nə-jən)
n.
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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American Heritage
Science Dictionary
hallucinogen   (hə-l'sə-nə-jən)  Pronunciation Key 
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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American Heritage
Cultural Dictionary
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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Example sentences
It's totally, absolutely a kind of modern-day rain dance, only without the hallucinogens.
Meaningful communication is possible only if you've also ingested hallucinogens and are flying side by side.
Prohibited drugs include any products that contain narcotics, amphetamines, hallucinogens or barbiturates.
The truth is, there's still a whole lot that scientists don't know about the effects of hallucinogens on the brain.
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