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pellagra
(Encyclopedia)pellagra pəlăgˈrə [key], deficiency disease due to a lack of niacin (nicotinic acid), one of the components of the B complex vitamins in the diet. Niacin is plentiful in yeast, organ meats, peanut...flea
(Encyclopedia)flea, common name for any of the small, wingless insects of the order Siphonaptera. The adults of both sexes eat only blood and are all external parasites of mammals and birds. Fleas have hard bodies ...epidemic
(Encyclopedia)epidemic, outbreak of disease that affects a much greater number of people than is usual for the locality or that spreads to regions where it is ordinarily not present. A disease that tends to be rest...Philip VI, king of France
(Encyclopedia)Philip VI, 1293–1350, king of France (1328–50), son of Charles of Valois and grandson of King Philip III. He succeeded his cousin Charles IV, invoking the Salic law to set aside both Charles's dau...villein
(Encyclopedia)villein vĭlˈən [key] [O.Fr.,=village dweller], peasant under the manorial system of medieval Western Europe. The term applies especially to serfs in England, where by the 13th cent. the entire unfr...Asclepius
(Encyclopedia)Asclepius ĕsˌkəlāˈpēəs [key], legendary Greek physician; son of Apollo and Coronis. His first teacher was the wise centaur Chiron. When he became so skillful in healing that he could revive the...angelica
(Encyclopedia)angelica ănjĕlˈĭkə [key], any species of the genus Angelica, plants of the family Umbelliferae (parsley family), native to the Northern Hemisphere and New Zealand, valued for their potency as a m...Passion play
(Encyclopedia)Passion play, genre of the miracle play that has survived from the Middle Ages into modern times. Its subject is the suffering, death, and resurrection of Jesus. Passion plays were first given in Lati...rinderpest
(Encyclopedia)rinderpest or cattle plague, an acute and highly infectious viral disease of cattle. It less frequently affects other ruminants, such as sheep, goats, and wild game. After an incubation period of thre...Mortimer, Edmund de, 5th earl of March and 3d earl of Ulster
(Encyclopedia)Mortimer, Edmund de, 5th earl of March and 3d earl of Ulster, 1391–1425, English nobleman, son of Roger de Mortimer, 4th earl of March. He succeeded (1398) his father not only as earl of March and U...Browse by Subject
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