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
Selma to Montgomery marches. For other uses of Bloody Sunday, see Bloody Sunday (disambiguation). The Selma to Montgomery marches were three protest marches, held in 1965, along the 54-mile (87 km) highway from Selma, Alabama to the state capital of Montgomery.