/ Dictionary / Index P psychoneurosis: Meaning and Definition of Find definitions for: psy•cho•neu•ro•sis Pronunciation: (sī"kō-noo-rō'sis, -nyoo-), [key] — pl. -ses neurosis (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: psychoneurosis (Thesaurus) psychomotor retardation psychoneurotic Related Content Daily Word Quiz: verdant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language