undernutrition

As an adjective undernourished

is provided with insufficient nourishment to sustain proper health and growth.

As a noun undernutrition is

inadequate nutrition, either due to a lack of food, or to the inability of the body to absorb its nutrients.

As nouns the difference between undernutrition and hyponutrition

is that undernutrition is inadequate nutrition, either due to a lack of food, or to the inability of the body to absorb its nutrients while hyponutrition is undernutrition.

As nouns the difference between nutrient and undernutrition

is that nutrient is a source of nourishment, such as food, that can be metabolized by an organism to give energy and build tissue while undernutrition is inadequate nutrition, either due to a lack of food, or to the inability of the body to absorb its nutrients.

As an adjective nutrient

is providing nourishment.

As nouns the difference between food and undernutrition

is that food is (uncountable) any substance that can be consumed by living organisms, especially by eating, in order to sustain life while undernutrition is inadequate nutrition, either due to a lack of food, or to the inability of the body to absorb its nutrients.