Erasmus, Desiderius Syllabification: (E·ras·mus, Desiderius)Pronunciation: /iˈrazməs/Definition of Erasmus, Desiderius (circa 1469–1536), Dutch humanist and scholar; Dutch name Gerhard Gerhards. He was the foremost Renaissance scholar of northern Europe, and paved the way for the Reformation with his satires on the Catholic Church. Erasmus, Desiderius in other Oxford dictionaries Definition of Erasmus, Desiderius in the British & World English dictionary