What does Ūniō Eurōpaea mean in Latin?

Ūniō Eurōpaea, a proper noun, means “European Union”.

What is the genitive of Ūniō Eurōpaea?

The genitive singular is Ūniō Eurōpaeae. Ūniō Eurōpaea is third declension.

In classical Latin, [ˈuː.ni.oː ɛu̯.roːˈpae̯.a]; in ecclesiastical (church) Latin, [ˈuː.ni.o eu̯.roˈpɛː.a].

proper nounthird declension

Ūniō Eurōpaea f (genitive Ūniō Eurōpaeae)

Classical[ˈuː.ni.oː ɛu̯.roːˈpae̯.a]Ecclesiastical[ˈuː.ni.o eu̯.roˈpɛː.a]

New LatinEuropean Union
Commissio Europaea et civitates sodales Unionis Europaeae, civitates meridionales mundi, et multa centra academica diplomatiae scientificae multo maiorem auctoritatem tribuunt.The European Commission and the member states of the European Union, the global southern states, and many academic centers attribute much greater authority to scientific diplomacy.2026 April 9, Peter Gluckman, Diplomatia scientifica: ab utopia ad pragmatismum, International Science Council:

By surface analysis, ūniō + Eurōpaeus. An internationalism calqued from another language, likely English or French.