We found 31 dictionaries that define the word hallucinogen:

General (21 matching dictionaries)

1. hallucinogen: Merriam-Webster
2. hallucinogen: Oxford Learner's Dictionaries
3. hallucinogen: American Heritage Dictionary of the English Language
4. hallucinogen: Collins English Dictionary
5. hallucinogen: Vocabulary.com
6. hallucinogen: Wordnik
7. hallucinogen: Cambridge Advanced Learner's Dictionary
8. hallucinogen: Wiktionary
9. hallucinogen: Webster's New World College Dictionary, 4th Ed.
10. hallucinogen: Infoplease Dictionary
11. hallucinogen: Dictionary.com
12. hallucinogen: Cambridge Essential American English Dictionary
13. Hallucinogen (EP), Hallucinogen (musician), Hallucinogen: Wikipedia, the Free Encyclopedia
14. hallucinogen: Rhymezone
15. hallucinogen: FreeDictionary.org
16. hallucinogen: Mnemonic Dictionary
17. hallucinogen: TheFreeDictionary.com
18. hallucinogen: The Wordsmyth English Dictionary-Thesaurus
19. hallucinogen: Longman Dictionary of Contemporary English

Computing (1 matching dictionary)

20. hallucinogen: Encyclopedia

Medicine (8 matching dictionaries)

21. hallucinogen: Merriam-Webster Medical Dictionary
22. Dorland's Illustrated Medical Dictionary (No longer online)
23. Hallucinogen: MedTerms.com Medical Dictionary
24. online medical dictionary (No longer online)
25. Probert Encyclopaedia of Medicine (No longer online)
26. hallucinogen: Medical dictionary
27. Hallucinogen: Drug Medical Dictionary
28. Hyperdictionary (No longer online)

Slang (1 matching dictionary)

29. Hallucinogen: Urban Dictionary

(Note: See hallucinogenic as well.)

Definitions from Wiktionary ( ) ▸ noun:  Any substance tending to induce hallucination. Similar: hallucinogenic drug, Psychedelic drug, psychodelic drug, hallucinant, deliriant, delirifacient, oneirogen, lysergic acid amide, psilocin, psychotomimetic, more... Opposite: stimulant, depressant, sedative, narcotic Types: LSD, acid, mushrooms, ayahuasca, DMT, peyote, sPedro cactus, morning glory seeds, more... Phrases: Hallucinogen persisting perception disorder, more... Adjectives: potent, powerful, mild, synthetic, new, natural, common, strong, dangerous, popular, true ▸ Words similar to hallucinogen ▸ Usage examples for hallucinogen ▸ Idioms related to hallucinogen ▸ Wikipedia articles (New!) ▸ Popular adjectives describing hallucinogen ▸ Words that often appear near hallucinogen ▸ Rhymes of hallucinogen ▸ Invented words related to hallucinogen