Definition that contains rct
- hall United States explorer who led three expeditions to the Arctic (1821-1871)
- davis English navigator who explored the Arctic while searching for the Northwest Passage (1550-1605)
- ross British explorer of the Arctic and Antarctic; located the north magnetic pole in 1831; discovered the Ross Sea in Antarctica; nephew of Sir John Ross (1800-1862)
- ross Scottish explorer who led Arctic expeditions that yielded geographic discoveries while searching for the Northwest Passage (1777-1856)
- knot a sandpiper that breeds in the Arctic and winters in the southern hemisphere
- reindeer Arctic deer with large antlers in both sexes; called `reindeer' in Eurasia and `caribou' in North America
- polar of or existing at or near a geographical pole or within the Arctic or Antarctic Circles
- arctic the regions to the north of the Arctic Circle centered on the North Pole
- arctic of or relating to the Arctic
- penguin short-legged flightless birds of cold southern especially Antarctic regions having webbed feet and wings modified as flippers