This is the 5561st most frequent Polish word.
unijny
Relating to the European Union.
Here, 'unijny' describes something belonging to or related to the European Union, specifically Poland as a member state.
Polska wchodzi w skład Unii Europejskiej jako kraj unijny.
Poland is part of the European Union as a member state.
In this sentence, 'unijne' refers to financial resources associated with or provided by the European Union.
Środki unijne są dostępne dla krajów członkowskich UE.
EU funds are available to European Union member countries.
'Unijne' here modifies 'regulations' to indicate that they are created or enforced by the European Union.