This is the 7897th most frequent Polish word.
mladenovicia
It seems like "mladenovicia" is not a Polish word but might refer to a name, possibly of Slavic origin. It does not have a direct meaning in Polish.
Used as a proper noun, specifically a surname.
Mladenovicia to nazwisko znanego piłkarza.
Mladenovicia is the surname of a well-known football player.
Referring to the individual associated with the surname, indicating participation.
Widziałem mecz, w którym grał Mladenovicia.
I watched a match in which Mladenovicia played.
Used to denote a family name, referring to a group or lineage.