The archaic demonym meaning for the Rio de Janeiro State is " fluminense ", taken from the Latin word flumen, meaning " river . " Despite the fact " carioca " is a most ancient demonym of Rio de Janeiro's inhabitants ( known since 1502 ), it was replaced by " fluminense " in 1783, when it was sanctioned as the official demonym of the Real Captainship of Rio de Janeiro ( later Province of Rio de Janeiro ), a few years after the City of S�o Sebasti�o do Rio de Janeiro has become the capital city of the Brazilian colonies.
