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 -agrā ) ( from agrā a seizing ; see ag- in Indo-European roots.)
(countable and uncountable, plural pellagras)