/ Dictionary / Index H hallucinogenic: Meaning and Definition of Find definitions for: hal•lu•ci•no•gen•ic Pronunciation: (hu-l"su-nu-jen'ik), [key] — adj. producing hallucinations: a hallucinogenic drug. of, pertaining to, or constituting a hallucinogen or hallucinogens. —n. a hallucinogenic substance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hallucinogenic (Thesaurus) hallucinogen hallucinosis Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language