Undernutrition

noun

1. Inadequate nutrition resulting from lack of food or failure of the body to absorb or assimilate nutrients properly.
2. Incomplete or imperfect nutrition.
3. An economic condition in society in which large numbers of individuals are insufficiently fed. It is estimated that in the United States as many as 10, 000, 000 persons, though not technically paupers, are inadequately nourished.
4. Inadequate nutrition, either due to a lack of food, or to the inability of the body to absorb its nutrients