Apo
a volcano in Mindanao, Philippine Islands; over 10,000 feet high. APOCALYPSE (a-poka-lips), the name frequently given to the last book of the New Testament, in the English version called the Revelation of St. John the Divine. It is generally believed that apocalypse the Apocalypse was written by the apostle John in his old age (95-97 A. D.) in the Isle of Patmos, whither he had been banished by the Roman Emperor Domitian.