For the purpose of this Regulation, the following definitions shall apply:
(a) "financial institution" means any undertaking that falls within the scope of the legislation referred to in Article 1(2) of Regulation (EU) No 1093/2010, of Regulation (EU) No 1094/2010 and of Regulation (EU) No 1095/2010, as well as any other undertaking or entity in the Union whose main business is of a similar nature;
(b) "financial system" means all financial institutions, markets, products and market infrastructures;
(c) "systemic risk" means a risk of disruption in the financial system with the potential to have serious negative consequences for the real economy of the Union or of one or more of its Member States and for the functioning of the internal market. All types of financial intermediaries, markets and infrastructure may be potentially systemically important to some degree.