hallucinogen

noun

hal·​lu·​ci·​no·​gen hə-ˈlü-sə-nə-jən 

: a substance that induces hallucinations

hallucinogenic

hə-ˌlü-sə-nə-ˈje-nik 

adjective or noun

Examples of hallucinogen in a Sentence

Recent Examples on the Web

The second drug charge, also a felony charge, is in Penalty Group 2, which includes varieties of stimulants and hallucinogens. —Stephanie Giang-Paunon, FOXNews.com, 2 Apr. 2026

Despite the divine assistance of stimulants and hallucinogens, looking for paradise in the middle of a desert party is a hopeless path. —Álex Maroño Porto, The Atlantic, 14 Mar. 2026

The episode starts wrapping up the Mexican healing journey that Shep is upset didn’t include even a mild hallucinogen. —Brian Moylan, Vulture, 12 Mar. 2026

Both Benna and Einhorn were used to André pitching outrageous concepts in conversation over the years, whether in regard to a new client or a road trip involving some remote outback and hallucinogens. —David Fear, Rolling Stone, 7 Mar. 2026

Word History

Etymology

hallucination + -o- + -gen

First Known Use

1954, in the meaning defined above

Kids Definition

hallucinogen

noun

hal·​lu·​ci·​no·​gen hə-ˈlü-sə-nə-jən 

: a drug that causes hallucinations

hallucinogenic

-ˌlü-sə-nə-ˈjen-ik 

adjective

Medical Definition

hallucinogen

noun

hal·​lu·​ci·​no·​gen hə-ˈlüs-ᵊn-ə-jən 

: a substance and especially a drug that induces hallucinations