This is the 11482nd most frequent Portuguese word.
oficializou
"Oficializou" means "formalized" or "made official."
In this sentence, "oficializou" is used to indicate that she formalized or made her candidacy official, emphasizing the act of officially declaring something.
Ela oficializou sua candidatura ontem.
She formalized her candidacy yesterday.
Here, "oficializou" signifies that the city hall made an official decision or validation regarding the avenue's name change.
A prefeitura oficializou a mudança de nome da avenida.
The city hall officially validated the name change of the avenue.
In this context, "oficializou" is used in a passive construction to convey that the contract was finalized into an official status following the action of signing.