Hilton, Conrad Syllabification: (Hil·ton, Conrad)Pronunciation: /ˈhiltn/Definition of Hilton, Conrad (1887–1979), US businessman; full name Conrad Nicholson Hilton. After buying up different hotels during the 1920s, 1930s, and 1940s, he formed the Hilton Hotels Corporation in 1946 and Hilton International in 1948.