For the purposes of this Regulation the following definitions apply:

(a) "client" means a client as defined in Article 2(15) of Regulation (EU) No 648/2012;

(b) "indirect client" means a client of a client as defined in point (a);

(c) "indirect clearing arrangements" means the set of contractual relationships between providers and recipients of indirect clearing services provided by a client, an indirect client or a second indirect client;

(d) "second indirect client" means a client of an indirect client as defined in point (b);

(e) "third indirect client" means a client of a second indirect client as defined in point (d).