A term which, as in Ac 19:28,34,35 and Ac 21:29, was applied to those natives or residents of the city of Ephesus who were adherents of the cult of the goddess Diana. A Jew or a Christian, though a native of Ephesus, would probably have been designated as such, rather than as an Ephesian.
The International Standard Bible Encyclopedia
Ephesian; Ephesians
The International Standard Bible Encyclopedia, James Orr (1915). Public domain, from the CrossWire SWORD module.