Wordnet 3.0
NOUN (1)
1.
a state of poor nutrition;
can result from insufficient or excessive or unbalanced diet or from inability to absorb foods;
The Collaborative International Dictionary of English v.0.48:
malnutrition \mal`nu*tri"tion\, n. [Mal- + nutrition.]
(Physiol.)
Faulty or imperfect nutrition; inadequate or unbalanced food
intake.
[1913 Webster]
WordNet (r) 3.0 (2006):
malnutrition
n 1: a state of poor nutrition; can result from insufficient or
excessive or unbalanced diet or from inability to absorb
foods