/ Dictionary / Index O Orestes complex: Meaning and Definition of Find definitions for: Ores'tes com"plex Pronunciation: [key] an unconscious desire of a son to kill his mother. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Orestes Øresund Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language