Austral

Aus·tral

Austral

a.
  1. Southern; lying or being in the south; as, austral land; austral ocean.
  2. Designating, or pertaining to, a zone extending across North America between the Transition and Tropical zones, and including most of the United States and central Mexico except the mountainous parts. (Biogeography)

Phrases & Compounds
Austral signs
the last six signs of the zodiac, or those south of the equator.