What does "malnutrition" mean?

A lack of adequate nourishment.

What is a synonym for "malnutrition"?

Common synonyms include: anemia, ariboflavinosis, beriberi, cachexia, caloric excess, chlorosis.

Pronounced //ˌmæl.nuˈtɹɪʃ.ən//.

/ˌmæl.nuˈtɹɪʃ.ən/ noun

noun ·Uncommon ·Advanced level

Noun

1
A lack of adequate nourishment. uncountable, usually
"It is predictable that some of these infections occur in individuals immunocompromised by malnutrition or underlying disease (notably cancer or AIDS) or by immunosuppressive therapy."
2
a state of poor nutrition; can result from insufficient or excessive or unbalanced diet or from inability to absorb foods wordnet

"Half a million children still face malnutrition in Niger."

From mal- + nutrition.