hal·​lu·​ci·​no·​gen | \ hə-ˈlü-sə-nə-jən How to pronounce hallucinogen (audio) \

Definition of hallucinogen

: a substance that induces hallucinations

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Other Words from hallucinogen

hallucinogenic \ hə-​ˌlü-​sə-​nə-​ˈje-​nik How to pronounce hallucinogen (audio) \ adjective or noun

Examples of hallucinogen in a Sentence

Recent Examples on the Web Microdosing is defined as the regular use of a psychedelic drug (a/k/a hallucinogen) at amounts so tiny as to be impossible to consciously perceive. Rebecca Coffey, Forbes, 29 June 2021 These ceremonies involved a small, spineless cactus called peyote, which contained a range of phenethylamine alkaloids—most notably mescaline, a high-power hallucinogen. John Semley, The New Republic, 26 July 2021 The compound is tabernanthalog (TBG), synthesized from the hallucinogen ibogaine by UC Santa Cruz chemical neuroscientist David E. Olson. Rebecca Coffey, Forbes, 23 June 2021 The legalization of regulated medical use of psilocybin, a hallucinogen, is on the ballot in Oregon. Sarah Elbeshbishi, USA TODAY, 3 Nov. 2020 Under the influence For the record, when people use a hallucinogen as part of a religious or spiritual ritual (as opposed to just for fun), anthropologists call the substance an entheogen. Kiona N. Smith, Ars Technica, 24 Nov. 2020 Some Indigenous communities regard the brew, which contains the hallucinogen DMT, as a powerful medicine that keeps them spiritually resilient and in harmony with the natural world. Ernesto Londoño And Adam Ferguson New York Times, Star Tribune, 10 Sep. 2020 Prude also had the hallucinogen phencyclidine, or PCP, in his system. Gary Craig, USA TODAY, 7 Sep. 2020 In medical settings, ketamine is routinely used for its rapid and anesthetic effects, but it is also used illicitly as a hallucinogen. Ryan W. Miller, USA TODAY, 26 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hallucinogen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hallucinogen

1954, in the meaning defined above

History and Etymology for hallucinogen

hallucination + -o- + -gen

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Time Traveler for hallucinogen

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The first known use of hallucinogen was in 1954

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Last Updated

21 Sep 2021

Cite this Entry

“Hallucinogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hallucinogen. Accessed 21 Sep. 2021.

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More Definitions for hallucinogen



English Language Learners Definition of hallucinogen

: a substance (such as a drug) that causes people to see or sense things that are not real : a substance that causes hallucinations


hal·​lu·​ci·​no·​gen | \ hə-ˈlü-sə-nə-jən How to pronounce hallucinogen (audio) \

Kids Definition of hallucinogen

: a drug that causes hallucinations

Other Words from hallucinogen

hallucinogenic \ hə-​ˌlü-​sə-​nə-​ˈje-​nik \ adjective


hal·​lu·​ci·​no·​gen | \ hə-ˈlüs-ᵊn-ə-jən How to pronounce hallucinogen (audio) \

Medical Definition of hallucinogen

: a substance and especially a drug that induces hallucinations

More from Merriam-Webster on hallucinogen

Nglish: Translation of hallucinogen for Spanish Speakers

Britannica.com: Encyclopedia article about hallucinogen


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