from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a disease caused by deficiency of niacin or tryptophan (or by a defect in the metabolic conversion of tryptophan to niacin); characterized by gastrointestinal disturbances and erythema and nervous or mental disorders; may be caused by malnutrition or alcoholism or other nutritional impairments
Sorry, no etymologies found.
Sorry, no example sentences found.