/ Dictionary / Index P psychomotor retardation: Meaning and Definition of Find definitions for: psychomo'tor retarda'tion Pronunciation: [key] a generalized slowing of psychological and physical activity, frequently occurring as a symptom of severe depression. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. psychomotor epilepsy psychoneurosis Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language