aus·tri·an I. \-ēən\adjective Usage: usually capitalized Etymology:Austria + English -an 1. a.: of, relating to, or characteristic of Austria b.: of, relating to, or characteristic of the Austrians 2.: of or relating to the Austrian school of economic theory II. noun (-s) 1.capitalized a.: a native or inhabitant of Austria b.: a native or inhabitant of Austria-Hungary 2.usually capitalized: a member of the Austrian school of economic theory