noun
EU member state; EU country
Refers to a country that is a member of the European Union. Used in political, economic, and news contexts.
EU加盟国は共通の通商政策をとっている。
EU member states have a common trade policy.
新しいEU加盟国として、クロアチアが2013年に加
Croatia joined as a new EU member state in 2013.