|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|1.||of or relating to the Arctic: arctic temperatures|
|2.||informal cold; freezing: the weather at Christmas was arctic|
|3.||(US) a high waterproof overshoe with buckles|
|4.||(modifier) designed or suitable for conditions of extreme cold: arctic clothing|
|[C14: from Latin arcticus, from Greek arktikos northern, literally: pertaining to (the constellation of) the Bear, from arktos bear]|
Note: The weather of the Arctic is characterized by long, cold winters and short, cool summers.
Note: The Arctic has been the object of much exploration by air, land, and sea. The shortest distance by plane between continents in the Northern Hemisphere is often over the Arctic.