marasmus

ma·ras·mus

noun \mə-ˈraz-məs\

Definition of MARASMUS

: severe malnutrition affecting infants and children especially of impoverished regions that is characterized by poor growth, loss of subcutaneous fat, muscle atrophy, apathy, and pronounced weight loss and is usually caused by a diet deficient in calories and proteins but sometimes by disease (as dysentery or giardiasis)