aurora australis[ô strā′lis]
aurora australis definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
aurora australis definition by American Heritage Dictionary
noun pl. aurora aus·tra·lis·es or aurorae australis
An aurora that occurs in southern regions of the earth. Also called southern lights.
Origin: New Latin aurōra austrālis : Latin aurōra, dawn + Latin austrālis, southern.