Williams syndrome: A genetic disorder characterized by mild mental retardation, unique personality characteristics, unusual facial features, and cardiovascular disease. The level of calcium tends to be high in blood (hypercalcemia) and urine (hypercalciuria).
Long March: Long March, (1934â35), the 6,000-mile (10,000-km) historic trek of the Chinese communists, which resulted in the relocation of the communist revolutionary base from southeastern to northwestern China and in the emergence of Mao Zedong as the undisputed party leader. Fighting Nationalist forces
Long March; Part of Chinese Civil War: Overview map of the route of the Long March Light red areas show Communist enclaves. Areas marked by a blue X were overrun by Kuomintang forces during the Fourth Encirclement Campaign, forcing the Fourth Red Army (north) and the Second Red Army (south) to retreat to more western enclaves (dotted lines).