In this law, the following terms have these meanings:

1. “Administrative act” is every individual administrative act and every normative subordinate legal act.
2.  “Individual administrative act” is every expression of will by a public organ, in the exercise of its public function, against one or more individually determined subjects of law, which creates, changes or extinguishes a concrete legal relationship.
3. “Normative subordinate legal act” is every expression of will by a public organ, in the exercise of its public function, which regulates relations defined by law, establishing general rules of conduct and which is not exhausted in its implementation.
4. “Administrative courts” are the administrative courts of first instance, the Administrative Court of Appeal and the Administrative Collage of the High Court.
5. “Administrative inaction” is every failure of action by an organ of the public administration to exercise administrative activity, according to the public function, which creates legal consequences on subjective rights or lawful interests.
6. “Public organ” is every organ of the central government that performs administrative functions, every organ of the public entities to the extent that they perform administrative functions; every organ of local government that performs administrative functions; every organ of the Armed Forces, every other structure whose employees enjoy the status of a soldier, to the extent that they perform administrative functions, as well as every natural or legal person to whom the right to exercise public functions has been given by law, subordinate legal act or any other kind of form provided by the legislation in force.
7. “Administrative action” is an administrative act, an administrative contract and another administrative action.
8. “Another administrative action” is every unilateral form of the activity of a public organ in the performance of a public function and which does not meet the conditions for being an administrative act or contract and which creates legal consequences over subjective rights or lawful interests.
9. “Expert of the court” is a qualified professional in the fields of technology or science, independent of the parties and registered as such previously in the register of experts maintained by the Court.
10. “Expert of the parties” is a qualified professional who has special, proven knowledge in the fields of technology or science and who is called and assists in the proceeding with his independent opinion and enjoys the status of a witness.