late 14c., antartyk "opposite to the north pole" (adj.), also (with capital A) "region around the South pole" (n.), from Old French antartique, from Medieval Latin antarcticus, from Greek antarktikos "opposite the north," from anti- "opposite" (see anti-) + arktikos "arctic" (see arctic). The first -c- sound ceased to be pronounced in Medieval Latin and was dropped in Old French. Modern English spelling, which restores it, dates from 17c.
1. Antarctic air brought biting cold to southern Chile on Thursday.
2. The snow cruiser proved hopelessly unsuited to Antarctic conditions.
3. Because of the extreme cold, the Antarctic is a uniquely fragile environment.
4. Scott of the Antarctic was a national hero of mythic proportions.
5. The Antarctic is the world's last great wilderness.