Usanian /juːˈseɪni.ən/adjective 1noun 1forms 2 adjective1 •Of or pertaining to the United States of America.In addition to a detailed analysis of the growth of 5 USAnian cities of metropolitan proportians—Boston, New York, Philadelphia, Chicago and Los Angeles— […] — 1947 noun1 •An inhabitant or citizen of the United States of America.I remember Juan Trippe arriving at Croydon from Paris in a Handley Page Hercules, at which that great pseudo-Usanian Cy Caldwell had thrown the jeer that it embodied “ built-in head winds.” — 1945 formsUSAnians · Usanians