a chronic disease caused by a deficiency of nicotinic acid in the diet and characterized by gastrointestinal disturbances, skin eruptions, and mental disorders: it is endemic in some parts of the world
Origin of pellagraItalian ; from pelle (L pellis), the skin + -agra ; from Classical Greek agra, seizure, akin to agein: see act
A disease caused by a deficiency of niacin and protein in the diet and characterized by skin eruptions, digestive and nervous system disturbances, and eventual mental deterioration.
Origin of pellagraItalian : pelle, skin (from Latin pellis; see pel-3 in Indo-European roots) + -agra, a seizure (from Latin, from Greek -agra, from agra, a seizing; see ag- in Indo-European roots).
(countable and uncountable, plural pellagras)