Definition: Antarctic is a term used for a group of islands, including several named places in Greenland that are not part of any continent but are within the Arctic Ocean. Definition: The Antarctic is a region on Earth's surface, extending from about 60°S to 65°N, where temperatures are colder than those found at sea level and the air pressure is higher there than it is in the equator. It is covered by ice that is less dense than the atmosphere above and has no open ocean. Antarctica includes three named regions: the Antarctic Peninsula (located about 200km west of Australia), the South Pole, and the East Antarctic Peninsula.