While in the West the term "Roman" acquired a new meaning in connection with the Catholic Church and the Bishop of Rome, the Greek form "Romaioi" remained attached to the Greeks of the Eastern Roman Empire. The term "Byzantine Greeks" is an exonym applied by later historians like Hieronymus Wolf; "Byzantine" citizens continued to call themselves "Romaioi" (Romans) in their language. Despite the shift in terminology in the West, the Byzantines Empire's eastern neighbors, such as the Arabs, continued to refer to the Byzantines as "Romans", as for instance in the 30th Surah of the Quran (Ar-Rum). The signifier "Roman" (Rum millet, "Roman nation") was also used by the Byzantines' later Ottoman rivals, and its Turkish equivalent Rûm, "Roman", continues to be used officially by the government of Turkey to denote the Greek Orthodox natives (Rumlar) of Istanbul, as well as the Ecumenical Patriarchate of Constantinople (, "Roman Orthodox Patriarchate").