/ Dictionary / Index M marasmus: Meaning and Definition of Find definitions for: ma•ras•mus Pronunciation: (mu-raz'mus), [key] — n. Pathol. malnutrition occurring in infants and young children, caused by insufficient intake of calories or protein and characterized by thinness, dry skin, poor muscle development, and irritability. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: marasmus (Thesaurus) maraschino cherry Marat Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language