/ Dictionary / Index H hypno-: Meaning and Definition of Find definitions for: hypno- Pronunciation: [key] a combining form meaning “sleep,” “hypnosis,” used in the formation of compound words: hypnotherapy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypnagogic state hypnoanalysis Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language