Austro-Hungarian UK /ˌɒs.trəʊ.hʌŋˈɡɛəɹi.ən/US /ˌɔs.troʊ.hʌŋˈɡɛɹi.ən/adjective 1noun 1forms 1 adjective1 •(historical) Of, from or pertaining to Austria-Hungary. noun1 •(historical) A person from Austria-Hungary. formsAustro-Hungarians