austr- I. combining form oraustro- Usage: usually capitalized Etymology: Middle English austr-, from Latin, south, from austr-, auster south wind, south; akin to Latin aurora dawn — more at east 1.: south : southern < austroasiatic > < Austroriparian > 2.: Australian and < Austro-Malayan > II. combining form oraustro- Usage: usually capitalized Etymology: probably from New Latin, from Austria 1.: Austrian and < Austro-Hungarian > 2.: Austria < austrium > < Austrophobia >