/ Dictionary / Index P psycho: Meaning and Definition of Find definitions for: psy•cho Pronunciation: (sī'kō), [key] — n., pl. adj. -chos, —n. a psychopathic or neurotic person. —adj. psychopathic; psychoneurotic. psycho- Pronunciation: [key] a combining form representing(psychological) and(psychoanalysis) in compound words. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: psycho (Thesaurus) psychic income psychoacoustics Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language