Pronunciation: (mu-jel'un),[key] —n. 1. Ferdinand, c1480–1521, Portuguese navigator: discoverer of the Straits of Magellan 1520 and the Philippines 1521.
2. Strait of, a strait near the S tip of South America between the mainland of Chile and Tierra del Fuego and other islands, connecting the Atlantic and the Pacific. 360 mi. (580 km) long; 2½–17 mi. (4–27 km) wide.