Antarctica
Originally from Greek antarktikos (ανταρκτικός), from anti (αντί) + arktikos (αρκτικός) "Arctic". Literally "opposite to the Arctic (opposite to the North)". Arktikos comes from Arktos, the Greek name for the constellation of the Great Bear Ursa Major, visible only in the Northern Hemisphere, which comes from the ancient Greek word ἄρκτος, which means bear.
Read more about this topic: List Of Continent Name Etymologies