an ancient kingdom of Asia, bounded on the north by Media, on the west by Susiana, on the east by Carmania, and on the south by the Persian Gulf. The Persians became very famous from the time of Cyrus, the founder of the Persian monarchy. Their ancient name was Elamites, and in the time of the Roman emperors they went by the name of Parthians; but now Persians. See CYRUS and for the religion of the ancient Persians, See MAGI .