/ Dictionary / Index M malnutrition: Meaning and Definition of Find definitions for: mal•nu•tri•tion Pronunciation: (mal"n-trish'un, -ny-), [key] — n. lack of proper nutrition; inadequate or unbalanced nutrition. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: malnutrition (Thesaurus) malnourished malocclusion Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language