For the purpose of this Regulation:
- 'legal instruments` shall mean legislative and statutory provisions, acts of administration, judicial decisions, contracts, unilateral legal acts, payment instruments other than banknotes and coins, and other instruments with legal effect,
- 'participating Member States` shall mean those Member States which adopt the single currency in accordance with the Treaty,
- 'conversion rates` shall mean the irrevocably fixed conversion rates which the Council adopts in accordance with the first sentence of Article 109l (4) of the Treaty,
- 'national currency units` shall mean the units of the currencies of participating Member States, as those units are defined on the day before the start of the third stage of Economic and Monetary Union,
- 'euro unit` shall mean the unit of the single currency as defined in the Regulation on the introduction of the euro which will enter into force at the starting date of the third stage of Economic and Monetary Union.