Definition of anorexia nervosa
: a serious disorder in eating behavior that is characterized especially by a pathological fear of weight gain leading to faulty eating patterns, malnutrition, and usually excessive weight loss and that occurs most commonly in young women in their teens and early twenties
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Merriam-Webster unabridged
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Time Traveler for anorexia nervosa
The first known use of anorexia nervosa was in 1873
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