/ Dictionary / Index H hallucinosis: Meaning and Definition of Find definitions for: hal•lu•ci•no•sis Pronunciation: (hu-l"su-nō'sis), [key] — n. Psychiatry. a mental state characterized by repeated hallucinations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hallucinosis (Thesaurus) hallucinogenic hallux 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