Dictionary.net

relating to or coming from the south; "austral winds"

of the south or coming from the south; "sailed the austral seas"

relating to or coming from the south; "austral winds"

of the south or coming from the south; "sailed the austral seas"

Designating, or pert. 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.

Designating, or pert. 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.