one of the Parry Islands in the Arctic Ocean, Baffin region, Nunavut territory, Canada. Located north of Barrow Strait between Devon and Bathurst islands, Cornwallis Island is about 70 miles (115 km) long and 30–60 miles (50–100 km) wide and has an area of 2,701 square miles (6,995 square km). It is comparatively flat, particularly on the northwest coast, and reaches a maximum elevation of 1,350 feet (411 metres) on the east coast. A weather station is located at the settlement of Resolute (Qausuittuq), which is a High Arctic air transportation hub and terminus on the south coast along Resolute Bay. The island was discovered in 1819 by Sir William Parry and was named after Sir William Cornwallis.