Law, ministerial decree, decision or other administrative act adopted by a Member State. A Member State’s omission to act may also constitute a measure. The Commission may start infringement proceedings if State measures, taken in relation to public under- takings and undertakings to which Member States grant special or exclusive rights, contravene EU competition law.
Source: Glossary of terms used in EU competition policy, Antitrust and control of concentrations, European Commission, 2002