/ Dictionary / Index U undernutrition: Meaning and Definition of Find definitions for: un•der•nu•tri•tion Pronunciation: (un"dur-n-trish'un, -ny-), [key] — n. nutritional deficiency resulting from lack of food or from the inability of the body to convert or absorb it. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. undernourished underpainting Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language