The term 'MASSIVE CONTINENT' can be solved by the four-letter word 'ASIA'. ASIA is the world's largest and most populous continent, covering an area of 17, 212, 000 square miles and home to over 4.5 billion people. It is bordered by the Pacific Ocean to the east, the Indian Ocean to the south, and the Arctic Ocean to the north. It is also home to some of the world's oldest civilizations, including China, India, and Japan.