One of the major ecozones of the world, covering the south polar regions.

Of, from, or pertaining to Antarctica and the south polar regions. / (figuratively) Opposite, contradictory. / (obsolete) Southern.

Alternative spelling of Antarctic

In an Antarctic manner or direction. / in a way similar to Antarctica; bitterly (cold)

Alternative form of Antarctic

A line, circling the Antarctic, indicating the boundary between the subantarctic and subtropical waters

(geography) The line which marks approximately the northernmost place in the Southern Hemisphere where the sun does not set on the summer solstice and does not rise on the winter solstice.

(geography) The part of the Earth between the geographical South Pole and the Antarctic Circle.

The Southern Ocean, particularly when understood as the waters south of the Antarctic Circle.

The northernmost part of the mainland of Antarctica.