hallucinogen

noun

hal·​lu·​ci·​no·​gen hə-ˈlü-sə-nə-jən How to pronounce hallucinogen (audio)
: a substance that induces hallucinations
hallucinogenic adjective or noun

Examples of hallucinogen in a Sentence

Recent Examples on the Web
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In fact, a 2018 study in Frontiers in Psychology found that people who were administered this hallucinogen reported experiences that were uncannily similar to that of a near-death experience: vivid imagery, feelings of transcendence, timelessness and unparalleled emotional insight. Mark Travers, Forbes.com, 16 June 2025 Once, Diddy asked Paul to test some 2-C, which is a hallucinogen. Victoria Bekiempis, Vulture, 21 June 2025 And if that takes a hallucinogen or three, so be it. Randall Colburn, EW.com, 21 May 2025 Ketamine is known as a dissociative anesthetic or dissociative hallucinogen. David Oliver, USA Today, 16 May 2025 See All Example Sentences for hallucinogen

Word History

Etymology

hallucination + -o- + -gen

First Known Use

1954, in the meaning defined above

Time Traveler
The first known use of hallucinogen was in 1954

Browse Nearby Words

Cite this Entry

“Hallucinogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hallucinogen. Accessed 22 Jul. 2025.

Kids Definition

hallucinogen

noun
hal·​lu·​ci·​no·​gen hə-ˈlü-sə-nə-jən How to pronounce hallucinogen (audio)
: a drug that causes hallucinations
hallucinogenic adjective

Medical Definition

hallucinogen

noun
hal·​lu·​ci·​no·​gen hə-ˈlüs-ᵊn-ə-jən How to pronounce hallucinogen (audio)
: a substance and especially a drug that induces hallucinations

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