Dias, Bartolomeu Syllabification: (Di·as, Bartolomeu)Pronunciation: /ˈdēəs, ˈdēˌäSH/ (also Diaz /ˈdēəSH/)Definition of Dias, Bartolomeu (circa 1450–1500), Portuguese navigator and explorer. He was the first European to sail around the Cape of Good Hope 1488, thereby establishing a sea route from the Atlantic Ocean to Asia. Dias, Bartolomeu in other Oxford dictionaries Definition of Dias, Bartolomeu in the British & World English dictionary