1. relating to the south polar region or Antarctica.
▪ relating to or denoting a phytogeographical kingdom comprising New Zealand, southern parts of Chile and Argentina, and islands in the South Atlantic and southern Indian Ocean.
noun
1. the Antarctic region.
Word Originlate Middle English: from Old French antartique or Latin antarcticus, from Greek antarktikos ‘opposite to the north’, from ant- ‘against’ + arktikos (see Arctic).