/ Dictionary / Index H Hypnos: Meaning and Definition of Find definitions for: Hyp•nos Pronunciation: (hip'nos), [key] — n. the ancient Greek god of sleep. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hypnos (Thesaurus) hypnopompic hypnosis Related Content Daily Word Quiz: epoch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language